R.B. BURNS, P.J.

Defendant John Griffin and plaintiff's decedent, Leslie B. Donnelly, had been friends for a considerable number of years. Due to his deteriorating physical condition Donnelly was incapable of attending to his physical needs in his last few years of life. During Donnelly's physical infirmness Griffin became a frequent visitor and gradually assumed the role of bill collector, real estate salesman, and business advisor. Subsequent to the business transactions forming the basis of this lawsuit the Cadillac State Bank was appointed Donnelly's guardian.

This appeal concerns three instruments executed by Mr. and Mrs. Donnelly; a land contract dated February 13, 1967, a warranty deed dated March 30, 1967, and a quitclaim deed also dated March 30, 1967. By the February land contract the Donnellys conveyed certain lots in the City of Cadillac to Griffin and his wife for a sum of $12,675. The contract provided for a down payment of $675 with the $12,000 balance being paid at a rate of 1% per month including interest at 6% per annum. According to the payment sheet of this land contract two credits were given on April 19, 1967; one for $7,500, the other for $5,000. The trial court permitted credit for the $7,500, but refused to recognize the $5,000 entry. The $5,000 entry represented a 90-day note allegedly given by Mrs. Donnelly to Griffin which Griffin applied against his land contract debt. The $5,000 entry on the payment sheet stated that the $5,000 represented a note given by Mrs. Donnelly which was acknowledged by Mr. Donnelly. The defendants argue that the trial judge abused his discretion in refusing to allow credit for the $5,000 entry; but we must uphold the trial court's finding unless we can conclude that it was "clearly erroneous". See GCR 1963, 517.1, and McDaniels v. Schroeder (1968), 9 Mich. App. 444. This reluctance to overturn the trier of facts is based on the well-recognized premise that the "trial court is in better position to determine the credibility of witnesses by observing their conduct and demeanor in court, an opportunity which the reviewing court on appeal obviously does not have". Osius v. Dingell (1965), 375 Mich. 605, 611, 612. This premise takes on added significance in this case because the trial court simply decided not to believe the $5,000 entry. Since the payment sheet entry and the 90-day note it was based on were both prepared by Griffin, the court's decision in effect was that it did not believe Griffin's testimony. The trial court did not express its reasons for disbelieving Griffin's testimony but our review of the record convinces us that its decision was justified. At least two witnesses testified to Griffin's bad reputation for telling the truth and anyone observing Griffin's prior arrest and conviction record would hardly be instilled with confidence in his veracity.

A number of questionable details also throw considerable doubt upon the validity of the $5,000 entry. To begin with the 90-day note purports to be a debt owed by Mrs. Donnelly to Griffin. Griffin testified that the debt represented "notes and taxes paid up". Since Mrs. Donnelly was deceased at the time of trial and because Griffin made no attempt to prove which notes and taxes he referred to, the court had only Griffin's word to rely on as to the validity of the note. In addition both the note and the payment sheet recited that the $5,000 was for land contracts, plural, without indicating which land contracts were involved. As previously mentioned Griffin prepared the payment sheet. The payment sheet somewhat mysteriously purports to record payments made on a piece of property unconnected with the land contract property. In addition, the defendants, although alleging full payment, did not have a deed for the property. According to the payment sheet the land contract price had been overpaid by $500. This overpayment was inconsistent with Griffin's weak financial position at the date of the entry.

The trial court as trier of the fact was the sole judge of the credibility of Griffin.

The trial court held, and we agree, that Griffin stood in a fiduciary relationship to Donnelly. Such a relationship exists when there is a reposing of faith, confidence, and trust, and the placing of reliance by one upon the judgment and advice of another. In re Jennings' Estate (1952), 335 Mich. 241; In re Wood Estate (1965), 374 Mich. 278. Testimony in this case clearly established that Mr. Donnelly, because of his feeble physical condition, was incapable of looking after himself. It is inconceivable to us that Donnelly was capable of attending to his business and financial matters. Griffin readily admitted that he had occupied a position of trust with both Mr. and Mrs. Donnelly and testified that Donnelly often heeded his advice concerning business matters. Griffin managed all of Donnelly's business affairs including the payment of taxes, the collection of debts, and the sale of real estate. Donnelly's advanced age and his physical infirmness led to his complete reliance on Griffin. This substantial reliance justified the trial court's decision to impose upon Griffin, as Donnelly's fiduciary, the burden of presenting credible evidence as to the fairness of his business dealings with Donnelly. Walters v. Pierson (1960), 359 Mich. 161. It was stated in In re Wood Estate (1965), 374 Mich. 278, 285:

"Once such a relationship [fiduciary] is established and the fiduciary * * * benefits therefrom, the law recognizes a presumption that he in whom trust was reposed exercised his influence unduly."

The trial court was correct in imposing this evidentiary burden upon the defendant.

As was the situation with the land contract, many questionable details surround the February quitclaim and warranty deeds. The trial judge's conclusion that both deeds were not intended as outright conveyances but were rather products of infidelity is supported by the record. Defendants failed to introduce sufficient credible evidence tending to prove the legitimacy of these two business transactions.

Affirmed. Costs to plaintiff.

All concurred.