James McCARTHY and Margaret SULLIVAN

James McCarthy was born in Glanmire, Cork, Southern Ireland about 1846, he married Margaret Sullivan on the 15th October 1870 at St Mary's Roman Catholic church, Stockton on Tees.
Margaret's birth name was Sullivan but married as Margaret DUGGAN. I have still not worked out whether Margaret's mother reverted to her maiden name after being widowed.
The 1911 census has the couple living in Stockton on Tees with youngest child Margaret (22), this census lists James' place of birth as Glanmire. The census also claims that the couple had 9 children of which just 5 were alive in 1911.
The 1881 census shows the couple living at 51 Lawson Street, four children James(9), Hannah (8), John (6) and Mary Ellen (1) shared the house with Hannah Duggan (mother in law) and John Duggan (brother in law, 37) and Cornelius Duggan (brother in law, 27).
By 1891 James and Margaret were at 92 Lawson Street with Margaret's mother and 6 children.