Gloucester's political importance did not end with his death; his disappearance from the political scene had immediate consequences. In his Welsh lordship of Glamorgan, the uncertain situation caused by his death caused a short-lived rebellion in 1316. In Ireland, where he also held large possessions, the power vacuum he left behind facilitated the 1315 invasion by Robert the Bruce's brother Edward. The greatest consequences, however, resulted from the division of the de Clare estates. In 1308, Gilbert de Clare had married Maud (or Matilda) de Burgh, the daughter of Richard de Burgh, Earl of Ulster. The couple left no surviving issue, so his death marked the end of the great de Clare family. The family lands were worth as much as £6,000, second only to those of the Earl of Lancaster among the nobility of the realm.