in 1881 browns directory Gavin, Peter, Ivy Cottage, near Peel
However no such name/place in 1881 census (beware there is an Ivy Cottage - a one time pub on Castletown Rd Douglas) - however as Peter is a very unusual Manx name the 1881 yields:
German Rees Cottage GIRVAN Peter Head U M 80 Pensioner Wicklow Ireland
German Rees Cottage TRENCHARD Catherine Housekeeper U F 57 Housekeeper Newtown Wales
by 1889 there was
McMurdoch Jane, tea, coffee and refreshment rooms, Ivy cottage, The Quay which doesnt quite sound same place
the William Craig is probably
German Derby Road New Cottage CRAIG William Head M M 45 Farm Laborer --- born Scotland
German Derby Road New Cottage CRAIG Jane Wife M F 42 --- --- Scotland
German Derby Road New Cottage CRAIG John Son - M 14 Scholar --- IoM
German Derby Road New Cottage CRAIG Thomas Son - M 8 Scholar --- IoM