Umfraville adhered to King Edward II of England both against Scots and barons, and was regularly summoned to the English parliaments as Earl of Angus (although in name only- the title had ceased to have any meaning whatsoever since the outbreak of the 1296 First War of Scottish Independence).

[2] He was summoned to the coronation of King Edward II of England in February 1308.

He was Joint Lieutenant and Guardian of Scotland from 21 June 1308, and appointed to treat for peace with the Scots on numerous occasions.

King Robert deprived him of his Scottish estates and title, and before 1329 the real earldom had been vested in the House of Stewart, from whom it passed in 1389 to a branch of the Douglases.

They had the following known issues: By his second wife, Eleanor, the widow of Richard Fitz Marmaduke of Horden, they had the following known issue:[1] This article incorporates text from a publication now in the public domain: Tout, Thomas Frederick (1899).