Hello Liz, you know by the Marriage cert. that Father, Robert Cain was deceased by 1917

Try for Memorial Inscriptions working backwards from 1917 and Wills I have put below, all from Brian’s website, www.manxlawsons

Burials,
Cain Robert age 77 dbc 5 May 1915
Cain Robert age 84 Bra 9 June 1912
Cain Robert age 77 Bra 14 Jan 1908
Cain Robert age 67 Onc 28 Feb 1905
Cain Robert age 77 Bra 15 May 1898
Cain Robert age 83 Onc 18 March 1891
Cain Robert age 83 Dsg 24 April 1878

Wills,
Cain Robert 1915 Dgs
Cain Robert 1912 Dgs
Cain Robert 1905 Dgs
Cain Robert 1896 Dgs
Cain Robert 1894 Dgs
Cain Robert 1890 Dgs
Cain Robert 1886 Dgs

Good luck
Averil