LDS has,

name: Margaret Higgins
event: Burial
event date: 23 Jan 1876
event place: Braddan, Isle of Man
death age: 73
digital folder number: 004495785

(a) Margt Higgins senr's maiden name, any possible Melvin.

LDS search for the Surname: Melven: comes up with the Surnames - Melvin – Melvein – Mylevoiney – Mylevonet

From Freebdm. (there are multiple spouses - you can contact the subscriber to see if this is the correct match)

Marriages Jun 1841
GARRATT Margaret Liverpool folio 20 page 333
Melvin James Liverpool Folio 20 page 333

Marriages Dec 1841
MELVIN Phillip Whitehaven Folio 25 173
TRENNELL Margaret Whitehaven Folio 25 173

Is this the Son, Thomas Higgins in the 1881 Census. (His Children all born in Manchester)

14 Seymour Street

Is this the Manchester address Margret Higgins gave on her Marriage Certificate.