Shirley, Which Shannon family is your line? Mine is Granville & Unity Williams Shannon through their son Alexander May Shannon. Michael Shannon John Shannon b. Scotland>John Jr. b. Scotland>Robert b. N. Ireland, had four sons>Thomas of Sadebury Twnshp, Lancaster Co.,Pa. m. Eigness>Samuel m. Jean Reid>Joseph m. Mary Billingsly>Granville m. Unity Williams>Col. Alex. M. m. Clara Viola Scott>James Alfred m. Dana Sproule>James Jr m. Gloria Gusman> Michael.