I can't find any Margt Karran that matches these dates (? was the burial on Island, also cowin/skillicorn marriage?) - I may have made a mis connection but I suspect the Thomas + Margt parents of John were at Ballagawn in 1841 + 1851 - john was only child with them in 1841 (tailor) but married eleannor cannell from Michael in 1842 had several children before her death in 1849 - he is working in the mines (a widower) in 1851 whilst Thos + Margt remain on small farm - that margt karran would appear to be daughter of Hugh Karran + Elinor Quayle bapt Mau 17790613