Wigtownshire or the County of Wigtown is one of the historic counties of Scotland, covering an area in the south-west of the country. Until 1975, Wigtownshire was an administrative county used for local government. Since 1975 the area has formed part of Dumfries and Galloway for local government purposes. Wigtownshire continues to be used as a territory for land registration, being a registration county. The historic county is all within the slightly larger Wigtown Area, which is one of the lieutenancy areas of Scotland and was used in local government as the Wigtown District from 1975 to 1996.

Ayrshire is a historic county and registration county, in south-west Scotland, located on the shores of the Firth of Clyde. The lieutenancy area of Ayrshire and Arran covers the entirety of the historic county as well as the island of Arran, formerly part of the historic county of Buteshire. Its principal towns include Ayr, Kilmarnock and Irvine and it borders the counties of Renfrewshire and Lanarkshire to the north-east, Dumfriesshire to the south-east, and Kirkcudbrightshire and Wigtownshire to the south. Like many other counties of Scotland, it currently has no administrative function, instead being sub-divided into the council areas of East Ayrshire, North Ayrshire and South Ayrshire. It has a population of approximately 366,800.