Henry Borwin I of Mecklenburg

Henry Borwin I (c. 1150–1227) ruled as Lord of Mecklenburg from 1178, succeeding his father Pribislav after his tournament death at Lüneburg, and married Matilda, daughter of Henry the Lion. From 1183 to 1185 he warred on his cousin Nicholas I; King Canute VI of Denmark captured him and forced him to cede Rostock and accept Canute as his liege, though Rostock returned to him as a Danish fief in 1200.

He fought for Denmark at the Battle of Stellau and received Gadebusch. He refounded Rostock and Wismar and founded Dobbertin Abbey.