I noticed on the 1891 scan that Ann Garrett, mother-in-law, was living in the house so it looks like Thomas and Margaret were married in 1882:
Thomas Corlett m. Margt Esther Garrett
24 DEC 1882 Maughold, Isle Of Man, England (IGI)

This is probably her in 1881:
Glen Olden, Lezayre, RG11 Peice 5600 Folio 5 Page 4
William GARROTT Head M Male 29 Isle of Man, England Butcher
Cate GARROTT Wife M Female 27 Isle of Man, England
Robt. GARROTT Son Male 1 Isle of Man, England
Ann GARROTT Mother W Female 54 Isle of Man, England
Margret GARROTT Sister U Female 23 Isle of Man, England

Couldn't determine which of the Thomas Corletts of the right age would be yours without any other family information - didn't seem to be any Millers but maybe he was doing something else at the time.

Cheers,
Ruth