Location of Richard on the censuses might also be a clue:
1841, Hyssington - next page on from Francis, the leadminer:
HO107/1439/23/9/10
Richard Ridge, 35, Leadminer
Sarah, 35
Sarah, 15
Daniel, 10
Mary, 10
Maria, 5
(also note that there was a Richard Ridge, aged 45, living next door to Francis)
1851, Hyssington:
HO107/1983/256/10
Richard Ridge, 48, miner, b. Shelve
Sarah, w, 48, b. Dudley
Maria, d, 16, b. Hyssington
on same page (? possible brother/stepbrother or relative):
Francis Ridge, 57, miner, b. Hyssington
(and family)
Gadget
PS - stepping through the Hyssington censuses reveals a few other Ridges!