The Comyn family were in effective power in Scotland from 1249 to 1255, when Alexander III of Scotland was a minor; John was one of those with court influence.[3] The Comyns were ousted by Alan Durward, but returned to power in 1257-8, before provoking a strong English reaction.[3][7]
He succeeded his uncle Walter, in 1258, as Lord of Badenoch, and was succeeded by his son John II, the "Black Comyn".
John I was known as the "Red Comyn", the nickname more commonly applied to his grandson.[14]
His first wife was called Eva, and appears to have been the mother of at least his oldest children.[15]
His second wife was named Alice and referred to in one document after his death as Lady Alice de Roos (Ros).[16][a] Alice was the daughter of William de Roos of Helmsley and Lucy FitzPiers.
^Scots Peerage has however suggested she might be a de Lindsay of Lamberton, because she and her husband possessed Ulesby, and also because John Comyn was once guardian to a related Lindsay.[17]
^Douglas Richardson, Kimball G. Everingham, Magna Carta Ancestry: A Study in Colonial and Medieval Families (2005), p. 210; gives his death as in 1273-8. Also see newer work Royal Ancestry (2013) Vol.II p.207.