Mercy married Thayer, Isaac on 12 Apr 1691 in Worcester, Worcester, Massachusetts, United States. Isaac (son of Thayer, Ferdinando and Hayward, Huldah) was born on 14 Feb 1664 in Mendon, Worcester, Massachusetts, United States; died in Dec 1754 in At Sea Near Cape Anne, Cape Arundel, Massachusetts, United States. [Group Sheet] [Family Chart]