delivered the opinion of the Court:
Obediah Jackson, Sr., died in the year 1865, leaving Obediah, Jr., Francis and Alice Mary, his children, and heirs at law. At the time of his death, he owned a large amount of real estate and a considerable amount of personal property. His son Obediah administered on his estate, but never settled or distributed the personalty. In October, 1871, the greater portion of the buildings on the property in Chicago was consumed by fire. Of the property thus injured were lots 17, 18, 19 and 20, in Sheldon & Bumsey’s subdivision of 205 feet on the south side of block 17, in Bushnell’s addition to Chicago, and situated on Dearborn street.
Complainant filed his bill to have his third of this property, and also of 40 feet of lot 2, in block 67, canal trustees’ subdivision, situated on West Twelfth street, partitioned and allotted to him in severalty. Also to have certain deeds, purporting to have been made by him to convey his third of this property, set aside as forgeries, and as clouds on his title. The deeds claimed to be forgeries were, one of them, to Obediah, Jr., for the Dearborn street property, and bore date the 25th of March, 1868. The other was to Dickhant, and was for the Twelfth street property, and bore date on the 25th day of May, 1876. They both purported to have been acknowledged, and were recorded. The records having been destroyed by the fire which consumed the buildings on the Dearborn street property, and the deed to that property not being produced on the trial, and the parties being unable to procure a copy, they were compelled to rely on an abstract of title. It does not give the name of the officer before whom the acknowledgment was taken. This deed, according to the abstract, purported to have been executed by complainant and his sister, Alice Mary, who subsequently married H. G. Bradford, Jr. She having settled with Obediah for her interest in her father’s estate, and executed a release to *85him, her interests are in no manner involved in this litigation.
Obediah Jackson and wife, on the 21st of November, 1874, executed a trust deed on the Dearborn street property, to Lyman Baird, as trustee, to secure the payment of $40,000 to the Plioenix Life Insurance Company, due in two years. Again, on the 13th day of November, 1876, Obediah Jackson executed a trust deed for the same property, to George Chandler, as trustee, to secure about $51,000 to the Misses Carrolls. The bill alleges that these deeds of trust are clouds on complainant’s title to the lots, and prays to have them removed as such. The first of these deeds of trust was executed over two- years after Mrs. Bradford had released all of her title and interest in the property to Obediah, and he then unquestionably held title'to tw.o-thirds of this property. During the pendency of this litigation, the Carrolls purchased the indebtedness from the insurance company, and thus became the owners of both claims and the deeds of trust.
The first question presenting itself for solution, is, whether the deed, purporting to have been executed by complainant and his sister to Obediah, is a forgery. On the trial, complainant swore most positively that he did not execute this deed, and never authorized any person to do so for him. His sister was equally as positive that she did not execute it. And she testifies she was not aware of its existence until December, 1876, or January, 1877. But she learned in 1872 that Obediah had mortgaged the lots in his own name, as the owner. Had the deed been genuine, she would almost certainly have known the fact. She, however, knows it was a forgery as to her. She, of course, was unable to swear that Francis did not execute it, but was able to swear she did not, and, as it was a forgery as to her, it raises a strong presumption that it was as to him. Her execution of the deed, if genuine, would have been a part of the transaction, inseparable from it, and would have been indispensable to its validity in the form it was made. And, being so inseparably connected, we *86regard that the evidence that it was-a forgery as to her, tends strongly to prove it was a forgery as to him. This was a fact connected with the execution of the deed, and was of the res gesice, and it tends to shed light on the transaction.
The question of the forgery, as to him, does not depend alone on his testimony, as is urged. If it did, numerous cases in this court would determine it wholly insufficient to overcome the proof of its execution afforded by the certificate of the officer that it was acknowledged before him. It is settled by those cases that nothing short of clear and satisfactory proof, convincing beyond a reasonable doubt, can overcome the proof of the certificate. His evidence is strongly supported by that of his sister; and she is entirely disinterested, and hence her evidence is free from suspicion. We think, all the evidence considered, that it proves this deed was a forgery.
But the question still arises that, conceding the deed to be a forgery, whether complainant did not so act as to bind himself, or rather his third of the property for its pro rata share of the expense of the improvements. He admits that, as early as in 1872, he and his brother, Obediah, after consulting as to the propriety of rebuilding on the lots they owned in common, the buildings on which had been destroyed by fire, determined to rebuild thereon. And, he says it was understood that his brother, in doing so, would use real estate of his own,-and the funds of complainant coming from their father’s estate. It also appears that afterward, the loan from the insurance company of the forty thousand dollars was procured, and used in erecting the buildings on these lots, and in freeing them, as we understand it, from a prior incumbrance of about thirteen thousand dollars.
It appears that complainant had lived with Obediah, and had a desk in his law office, and was on the most intimate terms with hjs brother, and so continued whilst these buildings were being erected, and until some time in the year 1876. When the buildings were being erected, he largely *87superintended their construction. He saw Mr. Baird there, from, time to time, examining the work as it progressed, to make advances on the loan from the insurance company as the work advanced towards completion. Complainant, from this money, which was from time to time placed to ObedialVs credit at the bank, on checks drawn by Obediah, paid the contractors. And, after the buildings were completed, he drew leases in ObedialVs name, which were signed by him, to tenants who occupied the buildings. He collected rents, gave receipts for rents in ObedialVs name, and placed the money to his credit in the bank. This continued until in 1876, and never, so far as the record shows, prior to that time having, to Baird or any one else, asserted any claim whatever to the property. He thus held his brother out to the world, whilst the buildings were in progress, and until in 1876., as the sole owner of the property. We think he so acted that he is estopped to claim that his interest in the property should not be held liable for one-third of the cost of the improvements. He has acquired the enhanced value the improvements have added to it. And every principle of justice requires that he should account to those whose money has enhanced the value of his property. If he wras unwilling to pay for it he should have notified Baird that he would not, and had Baird still advanced money for the purpose, the fault would have been his, and not complainant's.
There is another view of the case. It is a familiar and elementary rule, that where a tenant in common makes necessary repairs on the property, necessarily purchases an incumbrance, or outstanding title, or improves the property with the express or implied assent of his co-tenants, these all inure to the benefit of all of the co-tenants, and the law requires each to contribute to the expense, in proportion to. their several interests. Here, appellee authorized Obediah to make the improvements. Hot only so, but he Avas present frequently, superintending the work, and paid the contractors for Obediah Avith means drawn from his bank account. This, *88then, would seem to render his interest liable to account to Obediah for its pro rata share of the cost of the improvements.
The rule is familiar, that all improvements placed on real estate by the owner when it is incumbered, inures to the security or benefit of the holder of the incumbrance. They can not be separated, when they savor of the realty, from the land, nor can their value be claimed as against the lien, but are held to be subject to it. Here, Obediah placed buildings on the mortgaged property, and there can be no question that, as to his two-thirds, the improvements became liable to the debt to the same extent as did his two-thirds of the land itself. In placing these buildings on the lots, he acquired a lien on the other one-third for a proportionate share of the cost of the improvements. And this lien in his favor was an accession to the property, or his interest in it, as fully as were the improvements. And this lien inured to the benefit of the mortgagee, to the same extent, in the same manner, and for the same reasons that the improvements became liable to the lien of the deed of trust.
But it is claimed that Obediah agreed to pay for complainant’s portion with the means in his hands, as administrator of their father’s estate, to which complainant was entitled. Concede this to be true, does it appear that Obediah performed the agreement, or that he so paid a single dollar? We think not. The tendency of the evidence is strongly in favor of the inference that it was the money derived from the loan from the Insurance Company, and Obediah’s land, that paid for the materials and the workmen, and not the money coming to complainant from his father’s estate. All of the evidence on the question shows that the money thus used was Obediah’s, drawn from the bank on his checks. And complainant says he does not know whence Obediah procured it. We think it manifest that not only the real estate, but the money paid for these improvements, was. Obediah’s.
*89Complainant had never had any settlement with Obediah in reference to his interest in his father’s estate. What was coming to him from that source had not been ascertained by a settlement in the Probate Court, or with Obediah. The amount was unknown, and never had been adjusted or separated from Obediah’s means. He was liable to account to Francis for whatever was coming to him. So we regard it as clear that no portion of complainant’s money was paid for these improvements, but all by Obediah with his own means.
The questions affecting the Twelfth street property depend on evidence different in character from that relating to the Dearborn street property. It appears that on the 3d day of October, 1872, having recently, before that time, procured the release for this and other property from his sister, Obediah conveyed this property, as an entirety, to one Dickhant. The consideration was about $14,000. A part was paid at the time of the purchase, and notes taken for the balance. The purchaser, to secure the notes, deeded the property in trust to one Field. Afterwards these notes and the deed of trust were cancelled, and new notes and a deed of trust were given by Dickhant to complainant.
At the time of the conveyance Obediah only held two-thirds of the property, the other third belonging to complainant. Obediah warranted the title to Dickhant, and the notes for the balance of the purchase money were payable to Obediah. In 1875 the City Savings Bank, of which Obediah was vice-president and attorney, purchased these securities. Dickhant, having made default in the payment of interest, and Obediah being anxious to raise money on this indebtedness, induced Dickhant to renew them by giving new notes for the amount then due, and a new deed of trust to Boss. ■In renewal, one note was given for $6000 and one for $2000. The old notes and deed of trust were cancelled when the new ones were given. This renewal was made on the 3d of July, 1876, and defendant Butler purchased the $6000 note through brokers of Portland, Maine. Before he purchased, the City *90Savings Bank guaranteed the payment of the notes. On the 27th of the previous May, the deed, dated on the 25th, purporting to have been executed by complainant to Dickhant, for this property, was recorded. Complainant claims that this deed, and the deed of release from him to Dickhant cancel-ling the trust deed from the latter to him, are forgeries, and this is one of the questions to be determined in this case.
Complainant, in testifying on the hearing, swore positively that he never executed the deed to Dickhant, or authorized its execution. This evidence is strongly corroborated by Cole, the notary before whom the deed purports to have been acknowledged. He testifies that he never took a,n acknowledgment of such an instrument from complainant. Had the period not been so short before the filing of the bill, this evidence would have been regarded as of but little weight. Such officers are in the habit, in many instances, of taking large numbers of such acknowledgments, and, as we presume, feel no particular interest in such transactions. It is not, therefore, reasonable to suppose they ordinarily charge their memory with such occurrences, and they soon pass from their memory. But, in this case, the date of the certificate was but a few months prior to the alleged discovery of the forgery, and no ordinary memory could have forgotten it, had it in fact occurred. As he and complainant had been constantly associated in the same office for years, he would surely have remembered it at so short a period after its occurrence. We are, therefore, of opinion that the evidence shows that this deed was a forgery.
It is, however, insisted, that the conduct of complainant contradicts his evidence; that he ceased to collect the rents of this property after Obediah made the sale, and gave it no further attention until Obediah took the rents to meet the interest on Dickhant’s notes; that his relations and intimacy with his brother and his business was such that he must have known of the situation of the title to this property. But it must be borne in mind, that all such acts occurred before this *91forged deed was placed on record, and they can not he held to have any bearing on this subsequent deed, or to prove it is genuine. They can have no such effect.
It is claimed, however, that Hammond, the president of the City Savings Bank, took the notes and deed of trust to complainant in the summer of 1865, at his brother’s office, to procure his indorsement on some of them, when, after examining them, he said it was right, but desired to see Obediah before indorsing them; that Obediah, a day or two after, took the notes to his office, and returned with them indorsed by complainant. He unqualifiedly denies that such an interview, for that purpose, ever occurred, and five of the seven notes were produced on the trial, and they were not indorsed by him. Thus it appears that Hammond was mistaken, and referred to some other transaction. But, even if he was correct, does it prove that complainant should be precluded from asserting his claim to this property, free from the lien of this debt? The notes and deed of trust to him, at most, showed that Dickhant had given a deed of trust on the whole of the property, when he owned but two-thirds. There is no pretense that the forged deed was then on record, or until nearly a year afterwards. Even if he did say the instruments were right, after examining them, that would not transfer his third or estop him from asserting his title to it. The records were open to the bank, and, had it examined them, it would have found a third of the property belonged to him. That was notice to the.bank of the state of the title. Had he said, at the time specified by Hammond that he had conveyed his third to Dickhant, then a very different question would have been presented. But, be this as it may, we regard the evidence as being insufficient to prove the statement to which Hammond swears. All the evidence considered, we are of opinion that complainant has shown the deed to be a forgery, and Butler and Boss have failed to show that complainant is estopped from denying that the deed of trust is a lien on his third of the property.
*92It-is also urged, that the bill, as amended by striking out the prayer for an account of the estate of the father in the hands of Obediah, is still multifarious, and the demurrer to it should have been sustained; that by the bill, complainant insists that he .is the owner of one-third of both the Dearborn street and Twelfth street property—his tenants in common in the one are different in the other; that no one of the defendants claims an interest in both of these classes of property, and for that reason the bill is multifarious. It may be said, that no rule of equity pleading is less definitely settled, than that of multifariousness,—and, from its very nature, it must be so, as another rule requires all persons having an interest in the subject matter of the litigation, to be made parties. A person may frequently be made a defendant who has no interest in common with any other defendant. As to all but his particular interest, that of the others may be entirely distinct and separate, and }ret be embraced in the bill, and he made a party. Here, complainant claimed a one-third interest in all of the property named in the bill, -which seeks to have that interest set off and partitioned to him. The statute contemplates that more than one tract, and even separate tracts in different counties, may be embraced in one bill. See sec. 21, chap. 107, Rev. Stat. 1874. The bill is, therefore, not multifarious, unless it is rendered so by an improper joinder of defendants.
Story, in his work on Equity Pleadings, after reviewing the various cases on the subject, in section 539, says: “It seems to be, that there is not any positive, inflexible rule as to what will be fatal on demurrer. That courts have always exercised a sound discretion in”determining whether the subject matters of the suit are properly joined, or not; and whether the parties, plaintiffs or defendants, are properly joined; that each particular case must, to some extent, -depend on its own facts, having reference to former decisions, being governed by analogies.” It seems to us that there was no error in disallowing the demurrer. See Ryan v. Trustees of Shaw *93 neetown, 14 Ill. 20; Gage v. Chapman, 56 id. 311, and Finch v. Martin, 19 id. 105. But Boss and Butler should not be taxed with more than half of the costs in this or the lower court.
The decree, as to the Twelfth street property, is affirmed, but it is reversed as to the Dearborn street property, and the cause is remanded that further proceedings may be had in reference to it, in conformity with this opinion.
Decree reversed in part and affirmed in part.
Subsequently, upon an application for a rehearing, the following additional opinion was filed:
It is urged as one of the grounds for a rehearing, that the deed of trust on which the money was loaned to Obediah Jackson, Jr., contains other lots and real estate in which appellee claims no interest, which should first be exhausted, and applied in satisfaction of the deed of trust, before resorting to appellee’s third of the Dearborn street lots.
The opinion heretofore filed was not intended to nor does it exclude this view of the case. When the court below shall come to re-try the case, this question can be presented and considered, and if that court shall find, on the evidence presented, that it is equitable and just to apply the property on which appellee has no claim, in satisfaction of the debt, before subjecting appellee’s third of the Dearborn street lots, the court will so decree.
If the equities of other parties do not forbid, appellant should be required to exhaust his remedy against the property to which appellee has no claim, before resorting to his Dearborn street property.
It is a rule of equity, that a creditor, having a lien on two funds, in one of which the debtor has no interest, but has in the other, the debtor has a right to compel the creditor to exhaust the lien on the fund in which he has no interest *94before resorting to the fund in which he has an interest. This rule is, of course, subject to the limitation, that if other persons have a superior equity in the fund to which the debtor has no claim, then the rule can have no application.
The petition for a 'rehearing, having been carefully considered, is denied.
Rehearing denied.