Dear Gill, Thanks so much for writing to let me know that the Joseph CLARK born in Aldenham was not the son of William... this is a great help. I'm working with a big list of all Joseph CLARKs born @1851 in either Herts or Bucks... and have collected candidates from the 1861, 1871 and 1881 census returns... so am more than happy to be able to eliminate another candidate! Would anyone on the list have any ideas why my gr-grandfather gave 'Tring, Bucks' as his birthplace, considering Tring is part of Herts? On one census return, the birthplace is written as 'Bucks' followed by a 'w' and what looks like a superscript 'n', and then 'Tring'. I wonder if he meant 'Bucks within Tring'? I'm thinking it's possible he was actually born in Bucks, in a place close to the Bucks/Herts border. Does this seem more likely? Thank you again, Susan