Guys, that's brilliant. Thanks so much.
Mike, the death date for John Adams Bolton is spot on, so I'm pretty sure that's him.
The Elizabeth is a complete mystery, as JAB's mother was Mary (Adams) and she's buried at Ebchester, Co Durham along with his father Andrew Bolton. Does it say which cemetery it is?
Are you able to find this Elizabeth on the 1851 census and tell me a bit more?
I like a good mystery I do

Additional info: Dr Andrew Bolton 1800-1857 (JAB's father) was born in North Shields NBL & raised his five children (including John) in Ebchester DUR. This Elizabeth may be a maiden sister or a widow of a brother. I've never found a trace of that bit of the family, nor any reason why several lines migrated to Leicester. Elizabeth may provide the clue.
Grateful thanks & best wishes
Rob