The Rev. John Rosbrugh (c. 1714–1777), also spelled Rosborough and Rosburgh, was a graduate of the College of New Jersey (now Princeton University) where he studied for the ministry and was ordained a Presbyterian minister. In 1776 he organized and became commander of the 3rd Northampton County, Pennsylvania militia, then accepted a commission as company chaplain. He was killed at the Battle of the Assunpink Creek, also known as the Second Battle of Trenton; the first U.S. chaplain killed in battle.