And hello again! Apologies for picking up on this years later, but I just searched for Colvers and all your entries came up. Also lost all my emails last year so it's possible we've been in touch before - brain like a seive!
William was my ggg grandfather. Thomas died in 1828 in Earl Shilton, age 57. I've not been able to identify his birth record though I suspect he was the son of William and Elizabeth (Ward) and that the death register incorrectly has him as dying in 1784 (the record is confused somehow and relates to another Thomas who may actually have been called William - never untangled it).
Mary is in the 1841 census with her son Edward: 1841 census: Chapel Row, Earl Shilton
Age 65-69, with son Edward (20-25), Occupation: Seamstress
There are death and burial records for her in 1842, age 68. I've never found her maiden name.
Cheers
Mac