By 1437, all the male descendants of Elizabeth Mure had been executed, or had otherwise died, except for the king himself, James II, leaving only the heirs general.
Robert II had married Elizabeth Mure in a manner that was considered uncanonical, making the legitimacy of his children by her questionable.
His reduction of land from all of Strathearn to just Menteith was likely an indirect result of the death of Robert Stewart, Duke of Albany who was said to have died in Stirling Castle in 1420.
Two months after receiving the charter, in November 1427, Earl Malise entered England as a hostage for King James I, and was confined in the castle of Pontefract, where he was not released until 17 June 1453.
[2] James, Lord Hamilton, who had married the Earl's sister, Euphemia Graham, widow of Archibald Douglas, 5th Earl of Douglas, was the chief agent in obtaining the release, and received a grant on 17 December 1453 of the lands in the lordship of Kinpont, West Lothian.
In the retour of his grandson to the estates on 6 May 1493, Earl Malise is said to have died at the peace of King James IV of Scotland.
On 19 April 1471 Janet, Countess of Malise, Earl of Menteith, is held to be entitled to her terce from Kinpont, belonging to her son Patrick.