The History of the Several Towns, Manors, and Patents of the County of Westchester (1881 revised edition, Vol. I)
Mr. de Lancey accepted this position and removed to Philadelphia, where he continued to reside in the closest and most confidential relations with Bishop White, until the death in 1836, of that great and venerable prelate, the first Bishop of the American Church, consecrated by Anglican Bishops.
During this period, in 1827, in his thirtieth year, Mr. de Lancey was chosen Provost of the University of Pensylvania, that old " College in Philadelphia " founded by Benjamin Franklin; and also received the degree of D.D., from his Alma Mater, Yale College -- being the youngest man upon whom, up to that time, she had conferred that honor. He remained in the Provostship five years, having brought the University up to a very flourishing condition, when he resigned to resumchis profession and was elected assistant minister of St. Peter's church. Philadelphia, with the reversion of tire Rectorship upon the death of Bishop White.
That event occurring in 1836, Dr. de Lancey then became Rector of St. Peter's and remained such until 1839, when, upon the division of the State of New York into two Dioceses, he was elected Bishop of that part of the State, west of Utica, and consecrated Bishop of Western New York, at Auburn, May 9th, 1839, and took up his residence at Geneva
THE TOWN OF MAMARONECK.
in Ontario County, a town nearly in the centre of the new Diocese the same year.
After a long, distinguished and successful episcopate of twenty-seven years, Bishop de Lancey died in his own house in Geneva, on the 5th of April, 1865, in the sixty-eighth year of his age. "In him," said a writer in the Church Journal, " the Church in America loses the further services of one of her oldest and wisest Bishops. Descended from one of the oldest and best families in this country -- which dates far back in our colonial history, and was from the first one of the staunchest pillars of the Church -- Bishop de Lancey had also the good fortune to be personally connected with the leading minds in our American branch of the Church Catholic.