He was possibly dead by 1324, when his probable son, Duncan, was granted lands in Argyl for services rendered.
Her son, who has been jailed without bail for nearly five years, was granted $3 million bail just before Christmas.
Her sons were granted the title of Princes and style His Highness.
As part of the settlement the eldest son would be granted an immediate annuity on the land or a lump sum.
Moreover, his eldest son was granted a barony.
His son, the first Earl's grandson, was granted a writ of attendance to the Lords in the barony.
His young son George was granted the adjoining 100 acres.
His illegitimate son by her, Arnulf, was granted the duchy of Carinthia.
In 1977, his second son, the Hon Nicholas Assheton, was granted title.
His son was granted the title of baron soon afterwards.