Hi I'm trying to find decendants of my 4 X great grandparents THOMAS DOBSON (b. 1811 in Chester, Cheshire) & BARBARA DOBSON (nee DAVIES). I think the parents of Thomas are (GEORGE DOBSON & ELIZABETH MALLARD). My family also suffer from a rare hereditary disease called VARIEGATE PORPHYRIA and are the 2nd largest family in the entire UK to have it.