Note:  Do not rely on this information. It is very old.

Lothian

Lothian, the tract of land lying between the Tweed and the Firth of Forth. From 547 to 1018 it belonged to Northumbria. It is now divided into East (Haddington), Mid (Edinburgh), and West (Linlithgow) Lothian. From it the Kers take their titles of Marquis and Earl of Lothian.