John Barbour was archdeacon of Aberdeen, an auditor of the Scottish exchequer, and a royal pensioner. Consequently a number of isolated records of his activities have been preserved. In 1364 he was granted a safe-conduct to travel with four students to Oxford. In 1365 and 1368 he had permission to travel through England so that he might study in France. The notices of his journeys, his offices, and his rewards point to a busy and successful life. He died in 1395.

According to Wyntoun, Barbour's works were (1) The Bruce; (2) The Stewartis Oryginalle (or Pedigree of the Stewarts), now lost; (3) a Brut, which some have identified with extant fragments of a Troy Book (see the prefatory note to No. VII), and others with (2) The Stewartis Oryginalle.

The Bruce is found in two late MSS., both copied by John Ramsay; the first, St. John's College, Cambridge, MS. G 23, in the year 1487; the second, now at the Advocates' Library, Edinburgh, in 1489. It has been edited by Skeat for the Early English Text Society, and for the Scottish Text Society. The poem is valuable for the history, more especially the traditional history, of the period 1304-33. Barbour speaks of it as a romance, and the freedom and vividness of the narrative, with its hero-worship of Robert Bruce and Douglas, place it well above the ordinary chronicle. But far from disclaiming historical accuracy, Barbour prides himself that truth well told should have a double claim to popularity:

Storys to rede ar delitabill

Suppos that thai be nocht bot fabill:

Than suld storys that suthfast wer,

And thai war said on gud maner,

Hawe doubill plesance in heryng:

The fyrst plesance is the carpyng,