Not seeing an obvious source of the surname Gartshore so far.
I think this is Margaret in 1891 with family:
James M Watt 30 stonemason b. Hamilton
Elizabeth Watt 33 b. Riggend, Lanarkshire
Maggie Watt 5 b. Hamilton
Janet Watt 3 b. Hamilton
Elizabeth Watt 1 b. Fauldhouse, Linlitghowshire
Address: Woodside Cottage, Fauldhouse, Whitburn, West Lothian
Parents James Mitchell Watt and Elizabeth Graham married in Old Monkland, Lanarkshire in 1885.
Monica