1168. Death of William the Old, first Bishop of Orkney.
1176. Magnus Erlingson becomes King of Norway. Harald Ungi (son of Eirik Slagbrellir by a daughter of Earl Rögnvald) receives from King Magnus the title of earl and half of the Orkneys, and from King William the Lion half of Caithness, and is subsequently defeated and slain in Caithness by Earl Harald Maddadson.
1184. Magnus Erlingson, King of Norway, slain by King Sverrir, who succeeds him.
1188. Death of William II., Bishop of Orkney.
1192. Canonisation of Rögnvald (Kali), Earl of Orkney, who was killed by Thorbiörn Klerk.
1194. The Eyjarskeggiar collect forces in Orkney, and attempt to place Sigurd, son of Magnus Erlingson, on the throne of Norway, but are defeated, and nearly all slain, by King Sverrir at Floruvogr, near Bergen.
1195. Earl Harald Maddadson, compromised by this expedition, goes to Norway with Bishop Bjarni, lays his head at the king’s feet, saying that he is now an old man, and entirely in the king’s power. He is pardoned by King Sverrir, but on condition of forfeiting to the crown of Norway the whole of Shetland, which does not again form part of the domain of the Norwegian Earls of Orkney till 1379.
1202. King William the Lion marches north to Eysteinsdal on the borders of Caithness, with a great army, to take revenge for the mutilation of Bishop John, and the expulsion of the deputies of Rögnvald Gudrodson from Caithness by Earl Harald. Harald purchases peace by a payment of 2000 marks.
1206. Death of Earl Harald Maddadson. He is succeeded by his surviving sons, John and David. Thorfinn, his eldest son, died in Roxburgh Castle, where he was confined as a hostage, and had been mutilated by King William the Lion.
1214. Death of King William the Lion, and accession of Alexander II. to the throne of Scotland. Death of David, son of Harald Maddadson. His surviving brother John becomes sole Earl of Orkney and Caithness.