Born: September 16, 1796, Philadelphia, Pennsylvania.
Died: April 8, 1877, New York City.
Buried: St. Johnland Cemetery, Kings Park, New York.
William was the grandson of Henry Melchior Mühlenberg, patriarch of American Lutheranism.
He graduated from the University of Pennsylvania (where he helped found the Philomathean Society), and was ordained an Episcopal minister in 1817.
He served at St. James Church, Lancaster, Pennsylvania, and Church of the Holy Communion, New York.
He founded the Flushing Institute, New York, in 1828, and St. Luke’s Hospital in 1855. He also founded The Evangelical Catholic, a church newspaper.
He was instrumental in getting the Episcopal church to expand its use of hymns in worship, and served on the committee that produced the 1828 Protestant Episcopal hymnal.