The bike shop that was on Havelock Street ( opposite Cropps ) was Spot-On decorators in later years, (I think ) - wasn't it something to do with the Ferguson family?
Anyway, moving sideways, and perhaps not the same family, but there were 2 Golightly families in 1897, both on Carlton Street, and in 1911 ( per census ) Golightly families on Plessey Road , Rosamund Place and York Stret but they were ( as stated above ) working at the mnes
Perhaps they or their families left the industry.
Talking yesterday to an acquaintance who is a long time Blyth resident I mentioned this , and he immediately said "Golightly's Bread Shop" , but he doesn't remember why he associates the name with a bakery. But, perhaps it may spark a memory elsewhere ...?