Hi grov15
If you get Thomas' birth certificate that would show his father's name and occupation and his mother's full name.
It can be ordered online from the General Register Office
www.gro.gov.uk/gro/content/certificates/Sunderland register office website
http://www.sunderland.gov.uk/pages/registrars/ has a marriage for Martin
LAMONT to Annie SMITH in 1903 which is a possible and can be ordered from them if you click on the reference for a downloadable form, or from the GRO on the above link giving the reference 1915 June Quarter Lanchester volume 10a page 669
A quick search of the free 1911 census index though, and the 1901 census, doesn't show Martin under either surname variation
I think you will need Thomas' birth cert first though, to confirm parents' names, before being able to get any further back
Kind regards
Barbara
