I am also interested in Threadgills. John Threadgill who married Ann ? was my great-great-grandfather. According to the 1841 UK census he and his wife Ann were living in Walsoken and both gave their ages as 60. They were not around for the 1851 census so I presume they were dead. I know they had a least six children between 1812 and 1835 who were baptised in St Peter's Wisbech (also Wisbeach) but I have unable to find a record of their own marriage or baptisms. I am descended through their daughter Susan.