My family gene study lists only Mary and her younger sister, Elizabeth. I have done research on this family. If this branch is in anyone's tree, I would love to know mother Mary's maiden. I have Hough, Trewren, and maybe one other. I suspect it might have been Trewren because Mary and Elizabeth's brother is George Trewren.
Mary, Elizabeth and George were the children of Samuel and Mary (Xmaiden) Terrill, all born in Redruth, Cornwall.
Samuel June 1807
William July 1809
George Nov 1811
Thomas December 1814
Mary 8 April 1817
Elizabeth 13 April 1820