Question: What former Canadian MP and Senator named a community in Saskatchewan after a semi-ruined mid-14th-century fortress, located 5 km east of North Berwick, in East Lothian, Scotland?
Sentence (from "Tantallon Castle"): The last medieval curtain wall castle to be constructed in Scotland, Tantallon comprises a single wall blocking off the headland, with the other three sides naturally protected by sea cliffs.
Relevant evidence: No