Complex sentence: Lathrop accepted this offer and left for Plymouth, Massachusetts ending his widower status by marrying Anna Hammond (1616-1687) shortly before departure for the new world, arriving aboard the Griffin in 1634 or 1635.
Split into simpler sentences: Lathrop accepted this offer and left for Plymouth, Massachusetts. He married Anna Hammond (1616-1687) shortly before departure for the new world, arriving aboard the Griffin in 1634 or 1635.