 He divorced her in 1162, apparently under pressure from the Emperor Frederick Barbarossa, who did not cherish Guelphish possessions in his home area and offered Henry several fortresses in Saxony in exchange.In 1168, Henry married Matilda (1156–1189), the daughter of King Henry II of England and Duchess Eleanor of Aquitaine and sister of King Richard I of England.Henry faithfully supported his older cousin, the Emperor Frederick I (Barbarossa), in his attempts to solidify his hold on the Imperial Crown and his repeated wars with the cities of Lombardy and the Popes, several times turning the tide of battle in Frederick's favor with his Saxon knights.