SOUTHWORTH, Constant, colonist, born in Leyden, Holland, in 1614 ; died in Duxbury, Massachusetts, about 1685. His father, Edward, a merchant and business agent for the Leyden Pilgrims, died in 1621, and his mother, a woman of great worth and ability, came over in the third vessel to Plymouth colony in 1623 to become the second wife of Governor William Bradford, whom she had formerly known. The son was educated by his step-father, and in 1633 was one of the early settlers of Duxbury, which he represented in the legislature, becoming also commissioner for the united colonies, governor of the Kennebec plantation, and assistant governor of Plymouth. He was the supposed author of the supplement to "New England's Memorial," by his cousin, Nathaniel Morton (Cambridge, 1669). He bequeathed to one of his daughters two beds and furniture, "provided she do not marry William Fobbes, but if she do, then to have five shillings." The daughter preferred the latter alternative.