Complex sentence: He moved there from the other colonies by no later 1631 to fish and farm the land with his family in an agreement with Willoughby, and the Guy family remained the predominant planter family in Carbonear throughout the 17th century.
Split into simpler sentences: He moved there from the other colonies by no later 1631 to fish and farm the land with his family in an agreement with Willoughby. The Guy family continued as the predominant planter family in Carbonear throughout the 17th century.