Hi Sheena,
I saw your message looking for 'Callows' My Husband David Callow Clark's gt.gt. Grandfather was Martin Callow Iron Miner and he is descended from his son Martin Thomas Callow born 1861 in I.O.Man. I have a note of them on the 1881 and 1891 Censuses if you do not have the information and have a note of the Death Certificates of Martin and his wife Catherine. Hope to hear from you. Margaret