Possible Clues:

• "Wild Rose Country"
• The "A" in "ATCO"
• Warning about British area, region of North America
• Part of Canada, lively area for bishop to live in
• Canadian oil province
• It's west of Saskatchewan
• Its postal code is the first two letters of the alphabet, good luck remembering that though
• -- Ferretti, Italian fashion designer and dressmaker
• Canadian province that touches Montana in a way that makes me think they're more than just friends
• It's north of Montana