Hector Boece claims that he was the nephew of John III Comyn, Lord of Badenoch, but no contemporary evidence supports this.

[1] Cheyne belonged to a family with Norman roots which was well established in the northeast of Scotland, holding significant amounts of territory on the boundaries of the Earldom of Buchan.

[4] Pope Martin IV originally cancelled the election because le Chen had not been yet ordained a priest, but reversed his decision and commissioned Robert Wishart, Alan de St Edmund and William, the bishops of Glasgow, Caithness and Dunblane respectively, to consecrate le Chen after one of them had ordained him a priest.

[5] In 1309 he attended Robert's first parliament and was part of the renewal of the Treaty of Perth in 1312, but Bishop Henry nevertheless held a low profile for the remainder of the decade.

[9] Pope John XXII referred to le Chen as "of good memory", meaning that Henry had been absolved of his sentence before his death.