Rev. John Rosbrugh (c. 1714–1777) (also spelled Rosborough and Rosburgh) was a graduate of the College of New Jersey (now Princeton University). He was ordained a Presbyterian minister. In 1776 he organized and commanded the 3rd Northampton County, Pennsylvania . He then 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. Rosbrugh was the first U.S. chaplain ever killed in battle.