Priscilla Isabella Wallace Williamson (1864-1931), my great-great grandmother.
Priscilla had two illegitimate children - her eldest being my great grandmother - and then went on to marry three times becoming, in turn, Priscilla Paton, Priscilla Falconer and Priscilla Keddie. She once worked in coal mining as a pit head lassie. I'm curious about the sash she is wearing in the photograph.
I'm not sure when the photo was taken.