David Fillmore was the son of John William Fillmore and Sarah Reed who had married iin New Brunswick, Canada.
David’s sister Charlotte married Charles William Crabtree in 1835 in New Brunswick. Charles Crabtree was a son of Richard Arnold and Mary Giggey Crabtree.
David’s sister Sarah Jane Fillmore married George W. Crabtree, the brother of Charles.
David’s sister Cynthia married Arnold Bassett Hughet Wallace, son of Edmund Hay and Frances (Fanny) Crabb Wallace.