On February 22, 1767, Arnold married Margaret Mansfield. She was the daughter of Samuel Mansfield, the sheriff of New Haven. Historians think Arnold may have met Samuel Mansfield at the local Masonic Lodge. Arnold became business partners with Samuel Mansfield. Samuel Mansfield used his job as sheriff to help Arnold stay away from people to whom he owed money. Arnold's first son, Benedict VI, was born in 1768. Richard Arnold was born in 1769. Henry Arnold was born in 1772. Margaret died early in the revolution, on June 19, 1775, while Arnold was still at Fort Ticonderoga. Even while Margaret Arnold was still alive, it was really Arnold's sister Hannah who ran their house.