So - marriage is to Elizabeth Bailey, Dec qtr 1870 Bethnal Green.
Offspring start with Henry James Prime, mother’s maiden name Bailey, Jun qtr 1871 Bethnal Green.
He was born 1 April 1871 and baptised 23 April 1871 at St Matthew, Bethnal Green, son of James & Elizabeth. However when he was enrolled at school in 1878 his father’s name was recorded as John Prime, of 56 Old Castle St.