This looks like William Henry's burial:
CAIN, William Henry 36 Foxdale 15 Jul 1894. [BL's index]
He was aged 23 in the 1881 census.

This looks a good chance to be his will, which could give you some good information:
CAIN, William Henry 1894 Pat 122 [LDS film number]: 0106519

Emily was aged 19 in the 1881 census.

1901 Household transcript:
Name Relation Condition Se x Age BirthYear Occupation Disability Where Born
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CAINE, Emily Head Widow F 39 1862 Farming Patrick Isle of Man
CAINE, Fredrick Son Single M 22 1879 Lead Miner Patrick Isle of Man
CAINE, Annie Daughter Single F 18 1883 Dairy Maid England
CAINE, Herbert Son Single M 15 1886 Lead Ore Dresser Patrick Isle of Man
CAINE, Hillery Son M 12 1889 Patrick Isle of Man
CAINE, Nora Daughter F 10 1891 Patrick Isle of Man
CAINE, Clara Daughter F 8 1893 Patrick Isle of Man

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RG number:RG13 Piece:5306 Folio:143 Page:13
Registration District:Isle of Man Enumeration District:5
Ecclesiastical Parish:Foxdale
Civil Parish: Patrick Municipal Borough:
Address: Ballamoar, Patrick, Foxdale County: Isle of Man

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