John Kelly was born Ireland abt 1835 and Jane Scott was born Scotland abt 1842. The first record I have for them is the birth of their son John James Davie Kelly in November 1867. I have though been unable to locate a marriage for John Kelly and Jane Scott, made all the more difficult because I do not know where they married. I have checked online marriage records for England and Scotland without any luck and do not know the names of the parents of either John or Jane.
I am afraid I have no more information on John or Jane. I located Jane's surname from the birth certificate of John James Davie Kelly. I have located the family on every census from 1871 onwards.... 1871. 9 Queen Street, Back house, Whitworth, Durham John Kelly 40 Masons labourer Ireland Jane Kelly 36 Scotland John James Kelly 3 Durham Thomas Kelly 3 mths Merrington Lane, Durham
1881. 23 Tweed Street, Elswick, Newcastle John Shelly 50 General Lablourer Ireland Jessie Shelly 49 Scotland John James 15 Shop Boy Durham Tom 10 Spennymoor, Durham Sarah Jane 8 Newbottle, Durham
1891. 11 Delaval Terrace, Benwell, Newcastle. John Kelly 67 Bricklayers Labourere Ireland Jane Kelly 64 Scotland Sarah Jane 18 Newbottle
John Kelly died in November 1891 and his age on his death certificate was given as 56, so as you can see I can't even be sure of his year of birth, nor Janes. Jane died in 1907 and her death certificate gives her age as 65. All terribly confusing!