1124: David I of Scotland becomes king and introduces the feudal system of landholding to much of Scotland.
King David I of Scotland
1156: Somerled defeats the Norse King of Mann and the Isles, establishing his own semi-independent rule as ri Innse Gall-King of the Hebrides.
1164: Somerled is defeated by the Scottish crown in the Battle of Renfrew.
1174: William I signs the Treaty of Falaise in which he swears allegiance to Henry II of England.
King William I of
1178: William the Lion makes Glasgow an episcopal burgh of barony.