Lovely to hear from you. Sorry I can't help with your Giles Sansbury. I have done a lot of work on my Sainsbury and ? Saintsbury family in London in the early part of the 19thC. Also I have collected a lot of information about several families mostly either literary or bookselling and printing in London. I am now looking at records in the Public Record Office, Guildhall Library and the British Library. I have used the family search site, isn't it terrific, I have found some people for another of my families. Best Wishes Jenni