1911 census- Sarah Ann Walker married (27 years), age 40, born Co. Limerick, father George Eldridge (born England) also in household (with children Lillian M.M. 14, Fred G.H.P. 11, James 6).
1911 census- Frederick A. Walker-
www.census.nationalarchives.ie/pages/1911/Dublin/South_Dock/Sir_John_Rogerson_s_Quay/82653 1901 census- Hubberston, Haking, Pembrokeshire, Wales- Sarah A. Walker, age 37, born Havestock? Essex, wife of fisherman (with children Mary A. 15, Florence E.M. 12, Harriett H. 9, Lillian M.M. 5, Frederick G.H.S.? 3)
1891 census- Kingston Upon Hull, Holy Trinity, Yorkshire- Sarah Ann Walker, age 25, born Haverstock? Kent, fisherman's wife (with children Mary A. 5, Florence E.M. 2)
Marriage according to 1901 census should be c1884, Sarah Ann's maiden name likely to be Eldridge.
Frederick Aaron Walker/Sarah Ann Eldridge Apr./June 1884 Hull district volume 9d page 336.
Think Samuel as father's name on marriage certificate is an error (I have one certificate where first names of bride's father and groom's father are switched and several marriages where father's name is incorrect).