Finally found the family in 1901 census.
72 Boundary Street, Liverpool
Alexander LABOTT, Head, M, 40, Dock labourer, France, French subject
Sarah A., wife, M, 20, Liverpool, Lancs
Catherine GAFFNEY, M in Law, M, 48, Assistant housework (crossed out), Ireland

1891, 24 Boundary Street, Liverpool
Matthew GAFFNEY, Head, M, 45, Dock labourer, Ireland
Catherine, wife, M, 40, Ireland
Mary E., dau, 17, Domestic servant, Liverpool
Elizabeth, dau, 15, Dom serv, Liverpool
Sarah, dau, 13, Scholar, Liverpool

St Brigid's RC church, Liverpool
Born 9 May 1878, baptised 19 May 1878, Sarah Ann GAFFNEY (of 2 Court Gildarts Garden), daughter of Matthew and Catherine GAFFNEY (maiden name WARD)
Godfather Richard MURPHY
Godmother Maria FANNING
(Names originally in Latin)