Roger Mortimer, 1st Earl of March on 22 May 1306, in a lavish ceremony in Westminster Abbey with two hundred and fifty-nine others, he was knighted by Edward and granted livery of his full inheritance. His adult life began in earnest in 1308, when he went to Ireland in person to enforce his authority. This brought him into conflict with the de Lacys, who turned for support to Edward Bruce, brother of Robert Bruce, King of Scots. Mortimer was appointed Lord Lieutenant of Ireland by Edward II on 23 November 1316. Shortly afterwards, at the head of a large army, he drove Bruce to Carrickfergus and
Birger, King of Sweden acknowledged the son of Birger, Magnus Birgersson, as the successor to the throne. Torkel Knutsson, who was Duke Valdemar's father-in-law, was executed in 1306 as a token of reconciliation between King Birger and his brothers. The same year, in an event known as the Håtuna games ("Håtunaleken"), Birger was taken captive by his brothers on the Håtuna royal estate in Uppland and taken as prisoner to Nyköping Castle ("Nyköpingshus"). In 1308, Eric and Valdemar were forced by the Danish king to release King Birger, but they did so under humiliating conditions. When King Birger was free, he sought aid in