Hi Daniel,
I must admit I got half way through a 'Wouldn't you know it' ... until I realised it actually wasn't the same Robert GILL!
One of Thomas' son's was a Robert born 1811 in Pateley Bridge.
I haven't used the email address from this site yet ... and truthfully haven't looked yet. You could try them, or the Wharfedale FHS
http://www.wfhg.org.uk/Another source with GILL references is
http://www.sowerby-bridge.org.uk/greenhow/family/family.html. This specifically for families from the Greenhow Hill/ Pateley Bridge area.
Apart from that it's taken 10 years of scouring! I guess the sites I keep going back to are Ancestry.com, Rootsweb, Rootschat (of course!) and the IGI. I have only just joined Genes Reunited (as a means to share the family tree with my UK family) ... Probably haven't used it to it's full advantage though. There are a number of GILL researchers there, and we appear to all share the common ancestor of Thomas GILL and Sarah NEWBOLD.
I'd just like to verify Thomas' parentage, but coming up trumps!
Keep in touch won't you? We might end up on the same path - Who knows

Cheers for now,
Sue