Osmund, Bishop of Salisbury, builds Devizes castle.
The Armenian Kingdom Of Cilicia gained independence after its founder, Prince Ruben , who succeeded in establishing his authority in the mountainous regions of Cilicia. This is generally held to have occurred in 1080.
The Song Dynasty Chinese polymath scientist and statesman Shen Kuo begins his defensive military campaign against the Tanguts of the Western Xia Kingdom, successfully defending the invasion route to Yan'an .
