Ayrshire or Ayr, former county, SW Scotland. Ayrshire became part of the Strathclyde region in 1975. In the local government reorganization of 1996, Strathclyde was dissolved and the council areas of South, East, and North Ayrshire were created in part from the former territory of Ayrshire.
More on Ayrshire from Infoplease:
See more Encyclopedia articles on: British and Irish Political Geography