I hope I have the right man here's information for the family on the Isle of Man:-

It looks like Joseph Christian was married twice. His first wife, Elizabeth Kelly, died and her sister Eleanor Kelly helped to look after the family as they had a baby daughter and she later married Joseph.

Joseph's first marriage (note that Eleanor was a witness):-

familysearch.org/ark:/61903/3:1:S3HT-X9DS-83B?i=99&wc=ST5K-4WL%3A1381235302%2C1381302203%3Fcc%3D1784428&cc=1784428

1881 IOM Census

4 Quines Corner Douglas IOM

Joseph Christian, Widower, 32, General Labourer, Castletown IOM
Fanny Christian, 3, Braddan IOM
Eleanor Kelly, Sister in law, Single, 31, Housekeeper, Douglas IOM

William Joseph Christian’s parents’ marriage:-

familysearch.org/ark:/61903/3:1:S3HY-658S-3MW?i=19&wc=ST5K-FM6%3A1381235302%2C1381251837%3Fcc%3D1784428&cc=1784428

1891 IOM Census

2 Kensington Lane Douglas IOM

Joseph Christian, 42, General Labourer, Castletown IOM
Eleanor Christian, 39, Braddan IOM
Frances Christian, 13, Braddan IOM
Henry Christian, 7, Peel IOM
Caty Christian, 5, Peel IOM
William Christian, 3, Peel IOM
Edward Christian, 1, Douglas IOM

1901 IOM Census

9 Hatfield Grove Douglas IOM

Joseph Christian, 56, General Labourer, Castletown IOM
Eleanor Christian, 51, Braddan IOM
Frances Christian, 23, Braddan IOM
Robert H Christian, 17, Peel IOM
Catherine Christian, 15, Peel IOM
William J Christian, 13, Peel IOM
Edward K Christian, 11, Douglas IOM
Thomas H Christian, 9, Douglas IOM

1911 IOM Census

12 Albert Street Douglas IOM

Joseph Christian, 66, Fireman, Electric Railway, Castletown IOM
Eleanor Jane Christian, 60, Braddan IOM
Catherine Jane Christian, 25, Dressmaker, Peel IOM
Edward Kelly Christian, 21, Grocer’s Carter, Douglas IOM
Evelyn May Christian, Grand daughter, 6, Barrow in Furness [England]