Hi Gaffy,
The 1911 census is definitely Sarah Kirwan's family, despite the incorrect spelling of the family name.
I know this for certain because I met many of her siblings (my father's aunts and uncles), including
Teresa, Thomas and Annie, all who emigrated to Glasgow, Scotland.
My Nana Susan and another sister Lizzie also emigrated to Glasgow. Their Mother went with them. On marriage, Tess’s name became Monaghan, Annie’s name became Farmer, Lizzie’s name became Nawn and my Nana Susan’s name became McCahery. They had a brother James who emigrated to Canada.