There were also military threats to the Norman presence, such as the failed invasion by Robert Bruce's brother Edward Bruce in 1315, which was defended by the Irish chief Domhnall Ó Néill in his Remonstrance to Pope John XXII, complaining that "For the English inhabiting our land ... are so different in character from the English of England ... that with the greatest propriety they may be called a nation not of middle medium, but of utmost, perfidy". Further, there was the de Burgh or Burke Civil War of 1333–38, which led to the disintegration of the estate of the Earldom of Ulster into three separate lordships, two of which were in outright rebellion against the crown.