In 1861 William Owen (22) of Harlech, unmarried, mate, was on board the vessel "Sophia" in Barmouth Harbour, Merioneth.
In 1881 William Owen was not with his family. Wife Martha Owen (40) of Llanfair, sailor's wife, married, was living in Brynbogellyn? Llandanwg. Present were children (born in Harlech): Martha (12), scholar, William (10), scholar, Evan (6), scholar, Robert (4), scholar
In 1891 William Owen was not with his family. Wife Martha Owen (51) of Harlech, married, was living in Talartina Terrace, Llandanwg. With her were daughters (born in Harlech): Martha (22), dressmaker (deaf), and Margaret (8), scholar.
In 1901 William Owen (61) of Llandanwg, mariner, and wife Martha (60) of Llandanwg, were living at 3 Talartina, Llandanwg, Merioneth. Present was daughter Martha A. Owen (32) of Llandanwg, dressmaker.
In 1911 William Owen (72) of Llanfair, and wife of 46 years Martha (71) of Llanfair (mother of 8 children, 3 deceased), were living in Llandanwg, Merioneth. Present was daughter Martha Anne Owen (42) of Harlech