She was sister to the first Governor of the Colony Thomas Hinckley. She joined the Church June 13, 1652. ["American Descendants of Rev. John Smith"; Martha's Vineyard Historical Society]
SUSANNA HINCKLEY, bp. Tenterden, Kent, 6 November 1625 [NEHGR 65:315]; m. by 1644 John Smith (on an unknown date, "John Smith & Susannah Hinckley contracted at our sister Hinckleye's house [in Barnstable]" [NEHGR 10:39]; eldest known child b. Barnstable [blank] April 1644 [MD 12:154]).
"The American Descendants of Rev. John Smith" states that they were married June 13, 1643.