Does anyone know anything about Robinson's first wife? Before Submitt Draper? I am fairly certain her last name was Mathewson (Christine?), and Elizabeth likely married a cousin. 1861 Census shows Robinson's daughter Ann living with him, but Ann's baby daughter Janet listed in household of the widow Ann Mathewson from Scotland, who I believe was Robinson's late wife's mother.
Ann Mathewson later lives with William and Elizabeth.