In the 1891 census his family was:

Surname  Forename  Age  Relation  Occupation  Birth Place

Newman Samuel 45 Head Tailor Brading, Isle Of Wight
Newman Louisa J 40 Wife Canterbury, -
Newman Agbes M 10 Daughter Scholar Canterbury, -
Newman Frank 9 Son Scholar Canterbury, -
Newman Ethel M 7 Daughter Scholar Canterbury, -      
Newman Edward T 5 Son Canterbury, -
Newman William E 4 Son Canterbury, -
Newman Dorothy E 2 Daughter Canterbury, -
Standing Laura R K 16 Servant Canterbury, -

Ref: RG12/0708/F?

Address: 19 St George Street
Registration District: Canterbury
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From his daughter’s marriage in Vancouver, Canada, I would guess that he and his family emigrated and then he died there.  There is no Newman death around Canterbury on FreeBMD.
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Their marriage:

Surname First name(s) District Vol  Page
Marriages Dec 1879   (>99%)
NEWMAN Samuel Canterbury 2a 1357
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