The very next year he was murdered, possibly by order of Henry, 3rd Earl of Lancaster, Thomas's brother and heir.
His lands were given to Prince Edmund, who became first Earl of Lancaster shortly later.
His son Henry, 3rd Earl of Lancaster was apparently born there in 1281.
Henry, 3rd Earl of Lancaster (born 1281, died 22 September 1345)
The couple invaded England and joined by Henry, 3rd Earl of Lancaster captured the king.
His lands were given to Prince Edmund, who was shortly afterwards created Earl of Lancaster.
The family lands, were worth as much as £6000, second only to those of the Earl of Lancaster among the nobility of the realm.
The following Feb he was ordered to Coventry to resist the Earl of Lancaster.
The younger Henry was now Earl of Lancaster - the wealthiest and most powerful peer of the realm.
Sometime before 2 March 1297, she married Henry, 3rd Earl of Lancaster, by whom she had seven children.