« Reply #8 on: Wednesday 13 November 13 17:42 GMT (UK) »
I couldn't find any Carr, Cather or even Carter on St-Famille in the Lovell's directory. Even if she was just rooming she should be there.
And Lovell's has just quit on me. Nothing but blank pages 
Before Lovell's quit - were any of the other nurses listed on the 1921 census also listed at 33 St-Famille?
England: Archer, Bailey, Bates, Blower, Bosworth, Court, Hicklin, Orton, Palmer, Robbins, Sedgwick, Smith, Stevenson, Stone, Varnam, Wakelin, Walker
Canada: Archer, Walker, Spencer, Shepherd
Australia: Taplin
South Africa: Risley