Oliver Ormsby Page, A Short Account of the Family of Ormsby of Pittsburgh… (1892)
“ John Ormsby's name appears as heading the list of signers of an address dated 30 September, 1783, from the inhabitants of Pittsburgh to Brig. General William Irvine on the occasion of his retiring from the command of Fort Pitt. [17] He was one of the four "trustees of the congregation of Episcopalian Protestant church, commonly called the Church of England," to whom John Penn, Junior, and John Penn of the city of Philadelphia, Esquires, late proprietors of Pennsylvania, deeded the land for the present Trinity Episcopal church, the cathedral church of Pittsburgh, on 24 September, 1787. ”
