Both Terence's marriages were in Liverpool.
1. Holy Trinity 1849 to Ellen Miller. Groom's father Patrick Fitzpatrick, farmer. Witnesses Edward Dyson & Ellen Fitzpatrick.
2. St. Bride, Toxteth 1855 to Margaret Singleton. Groom's father Patrick Fitzpatrick, deceased. Witnesses James Marshall & Ann Wilson.
Baptism St. Peter, Liverpool, 1859 Margaret Ann Fitzpatrick, child of Terence & Margaret, abode Pellow St.
(Lancashire Online Parish clerks www.lan-opc.org.uk)
Patrick was dead by 1855 but might have been alive in 1849. Too early for civil registration of death in Ireland. It looks like he died too soon to have been included in Griffiths' Valuation.
An Ellen Fitzpatrick, aged 30 died in Liverpol 1853 (GRO Deaths index)
I was hoping that there would have been children of Terence's 1st marriage, born in Ireland, who would tell us, when they grew up, where they were born. I noted burial of an Ellen Fitzpatrick, aged 14, in Liverpool 1848, address Milton St., in case she was connected.