9)JOHN SYLVESTER GRAHAM age 31, Irish origin born in NB Farmer, on the 1861Census they lived immediately next door to JOHN GRAHAM and wife RACHEL GRUMBLE, JOHN SYLVESTER was age 42 born in NB., RC, Irish, Farmer from the 1871 Census, his wife JOHANNA is age 32 Irish origin born in Mayo on the 1861 Census and age 43 born in Ireland, RC, Irish on the 1871 Census. By the 1891 Census JOHANNA is age 66 born in Ireland with both parents born in Ireland, RC, she is head of the household and listed as Farmer
There is a John Graham Jr. son of John and Johanna in the next generation... perhaps he is the one who married Jane Walsh or Jane and Johanna are the same person?

4)JOHN JR. GRAHAM is age 8 on the 1871 Census, he is age 27 and living with his mother on the 1891 Census