 After Molly 's father died , her family moved back to Canajoharie . On September 9 , 1753 , Molly 's mother married Brant Kanagaradunkwa , a Mohawk sachem of the Turtle clan . Possibly to reinforce their connection to Brant Kanagaradunkwa , who was a prominent leader , Molly and Joseph took their stepfather 's name as a surname , which was unusual for that time . 
