(IV) Jonathan, son of Paul and Mary (Leighton) Gerrish, was born May 24, 1726, and settled in Falmouth (now Portland). He was a lieutenant in the company commanded by his brother, Captain Samuel Gerrish, and served under General Abercrombie and General Amherst. He participated in the battles at Crown Point, Ticonderoga and Fort Niagara. He married August 23, 1749, Eunice Tobey, of Kittery. Children: Nathaniel, born 1750; Mary, 1751; Martha, 1753, married Benjamin Frye, of Sumner, Maine; Eunice T., 1775. married Jedediah Leighton, of Falmouth.