Dodson's brother-in-law, his wife Margaret's brother, James Isaacson ( 1660 1724 ), was MP for Banbury 1698 99 . Commissioner stamp duty 1694 1702; King's warehouse keeper of the customs, port of London c . 1696 before 1702; commissioner of customs [ Scotland ] 1707 9, Governor of the Friendly Society for Widows 1696.