The IGI (member's entry) gives Richard Leopold's details as:
Richard Leopold Cain Birth: 1880 Douglas
Death: 19 DEC 1911
Parents:
Father: Robert Caine Mother: Jane Amelia BACKWELL

which may well be correct, because Maughold parish register marriages has the same father:

1 Oct 1908

Richard Leapold CAIN full age Widower Accountant Hildesley Rd, Douglas [father] Robert Cain, Tailor

Eliza COTTIER full age Spinster Waterloo Rd, Ramsey [father] James Cottier, Farmer

It is highly unlikely that there would be two Richard Leapold Cains, and with a second marriage in 1908 he must have been born before "the late 1890s"?

Isn't this the family in 1881?
Name Relation Marital Status Gender Age Birthplace Occupation Disability
Robert CAINE Head M Male 44 Douglas, Isle of Man, England Tailor & Bookseller
Jane Amelia CAINE Wife M Female 44 England Tailors Wife
Robt.Chas. CAINE Son U Male 16 Douglas, Isle of Man, England Draper
George Herbt. CAINE Son U Male 14 Douglas, Isle of Man, England No Occupation
Frank Jas. CAINE Son U Male 13 Douglas, Isle of Man, England No Occupation
Ethel Helena CAINE Daur U Female 11 Douglas, Isle of Man, England Scholar
Louisa Alberta CAINE Daur U Female 9 Douglas, Isle of Man, England Scholar
Richd. Leopold CAINE Son U Male 1 Douglas, Isle of Man, England
Ester KELLY Servant U Female 35 Ireland General Domestic Servant
Source Information:
Dwelling 2 Athol St
Census Place Onchan, Isle of Man, Isle of Man
Family History Library Film 1342346
Public Records Office Reference RG11
Piece / Folio 5603 / 4
Page Number 1

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