delivered the opinion of the Court:
This was an action of ejectment. The controversy is one of heirship, arising as follows:
John McDeed and Marinda Hollenbaek were married in the State of Ohio on the 10th of October, 1824. About the year 1827, John McDeed left his wife in Ohio and-came into *548the State of Indiana, where he was afterwards married to Clarinda Wiley. McDeed and his wife Clarinda subsequently removed to DeWitt county, in this State, and he acquired the legal title to, and died in possession of the lands in controversy. His first wife, Marinda, was living at the time of his death.
This suit was instituted by John J. McDeed, the son of John McDeed by Marinda McDeed, against Clarinda McDeed and the other defendants, her children, who were in possession of the lands of which John McDeed died seized, claiming that he, the plaintiff, was the sole heir of John McDeed, and as such entitled to the whole of said lands.
The ground on which the defendants attempted to avoid the effect of the first marriage was, that John McDeed, at the time of the marriage, was under the age of 18, the age of consent in Ohio, and that at, or before his arrival at the age of 18, he disaffirmed the marriage by ceasing to cohabit with his wife, and that thereby, under the laws of the State of Ohio, he avoided the marriage.
A verdict and judgment were rendered for the defendants, and the plaintiff has appealed.
It is insisted on, as error, that the court permitted the depositions of Perkins and Bissell, lawyers of the State of Ohio, to be read in evidence to prove a statute of Ohio and a judicial decision under it.
It was undoubtedly error to allow the statute of a foreign State to be proved by parol. But the statute book of Ohio was also introduced in evidence, which obviated the error.
The common law of a foreign State may be proved by parol evidence. The usual course is to make such proof by the testimony of competent witnesses instructed in the law, under oath. As a general rule, “the decisions of courts of justice are the evidence of what is common law.”
In Kingsley v. Kingsley, 20 Ill. 202-3, the following language was held by this court: “ Courts have uniformly taken notice of the construction given to foreign statutes by the *549foreign tribunals; and to enable them to do this, they have always been in the habit of looking to the reports of such tribunals. Whatever the court may take notice of, or may learn from reported decisions, it may also be informed of by the testimony of witnesses learned in the foreign law.” The statement of Mr. Perkins, in his deposition, was to the effect, that, by the laws of Ohio in 1824, male persons of the age of eighteen, and females of the age of fourteen could be legally joined in marriage; that marriages between parties, either of whom was younger than above specified, were void, unless they cohabited after they arrived at the age of consent, and if they did so cohabit the marriage was legal from the beginning; that this became the law of Ohio by the holding of its cpurts judicially. We think no -just exception can be taken to the admission of such testimony.
It is next insisted that the court erred in permitting the entry in the bible of the date of the birth of John McDeed, written by the witness Rosencrans, to be read in evidence.
The testimony of the witness was, that some time after the suit was commenced he copied the writing, at the request of Clarinda McDeed, from a leaf in the bible; that the original was somewhat worn and “ blotched,” but it could be distinctly read; the paper was wet and damaged some; that he did not know what had become of the original leaf. This was all the evidence there was in excuse of the non-production of the original. The absence of the leaf containing the original entry was not sufficiently accounted for to justify the admission of the secondary evidence of the copy.
Error is also assigned in the refusing and giving of instructions.
The 18th instruction asked by the plaintiff and refused by the court, was to the purport, that if John McDeed and Marinda Hollenback were respectively of the ages of fourteen and twelve at the time of their marriage, a decree of divorce was necessary to dissolve it. This was adopting the common law ages of discretion, and entirely discarding the *550law of Ohio upon the subject. The law of that State must control as to the validity of the marriage.
There was evidence tending to show that John McDeed was under the age of eighteen at the time of the marriage, and that he never cohabited with Marinda Hollenback after his arrival at that age, and that under such circumstances the marriage was made void under the law of Ohio. In view of there being such testimony in the case, the instruction was properly refused.
The evidence also shows, that, under the law of Ohio, the prior issue of the marriage would be legitimate, notwithstanding such disaffirmance of it. But the suit is to recover the whole lands, and not an undivided interest in them.
The first instruction given for the defendants we regard as faulty in requiring the plaintiff to make out his case by a clear preponderance of evidence. These words were twice used in the instruction, and were calculated to mislead the jury as. to the quantity of evidence necessary to justify a verdict for the plaintiff. They may have supposed the instruction to mean that the plaintiff must, beyond a reasonable doubt, prove his case by a preponderance of evidence, especially in connection Avith the next instruction given. We regard it as a case Avhere a mere preponderance of evidence on the part of the plaintiff was sufficient, and a clear preponderance of evidence should not have been exacted.
The second instruction given for the defendants we regard as wholly wrong. It was unwarrantably laying down rules of criminal evidence in the trial of a civil suit. John McDeed was not on trial for the crime of bigamy, and the rules applicable to such a trial were entirely out of place. The burden of proof was incorrectly stated. It was incumbent on the defendants to show that- the first marriage Avas legally avoided, and it was not for the plaintiff to show the reverse. In doubtful cases the presumption of innocence, where it obtains, is always 'sufficient to turn the scale in a defendant’s favor. The presumption of innocence should not *551have been thrown into the case, as it was by this instruction, to weigh against the plaintiff’s evidence.
There is a tendency to abuse in the trial by jury, by bringing into a case extraneous matter not pertinent to the issue being tried, which is liable to wrongfully bias the determination of men not versed in the true principles of judicial inquiry. A court should always carefully abstain from lending countenance to such practice.
The judgment must be reversed and the cause remanded.
Judgment reversed.