Hi Richard, Edward and William were sons of Thomas Cammack (1791-1872), a doctor of Spalding. His biography is in the Lancet etc. His grandfather was Thomas Cammack (1766-1833) a Habit Maker and Taylor of Spalding. His father is Thomas Cammack (ob 1778) another Taylor of Spalding. His father MAY be James Cammack of Revesby (1696-1762) but not still working on that!