Hi,
Have found them in the 1891 census see below:-
francis j mcgurk head 42 beerhouse keeper born northumberland newcastle
margaret e mcgurk wife 41 assistant in Inn born ripon yorkshire
beatrice b h mcgurk daug 17
frank mcgurk son 12
mary a mcgurk, sister, single, 43 retired inn keeper
Living in gateshead
Mcgurk, Francis J 42 Head b Newcastle, Northumberland
RG12/4179/75 p 31
ED 25 RD Gateshead
Gateshead St Mary, Durham