I believe that Amos' father Joseph Sunderland was brother to my relative Riley Sunderland. I have many relatives still in the Haworth/Keighley area including my 90 yr old Grandma who is very with it! I have been able to source quite a bit of info for you including the mother Tamer who married 3 times!
I also have got copies of census entries and a map of Back Leeming.
If you care to e-mail me I can forward this on to you - makes it easier as attachments rather than me having to transcribe everything onto this web page.