Dictionary of National Biography, 1885-1900/Mackulloch, Magnus
MACKULLOCH, MAGNUS (fl. 1480), reputed continuator of Fordun's 'Scotichronicon,' was a clerk in the diocese of Ross, and chaplain to William Schewes, archbishop of St. Andrews, for whom he made a copy of the 'Scotichronicon' in 1483-4; this is now Harleian MS. 712. Tanner, following Dempster, has incorrectly made Mackulloch the author of a considerable part of the 'Scoti-chronicon. It is, however, clear from the body of the work that the compiler was born in 1885, and probably the only claim which Mackulloch can make to authorship consists in the additions at the end of the Harleian MS., which bring the narrative down to 1460; they are printed in Goodall's edition, ii. 514. So far as the rest of the work goes, he was merely a transcriber; another manuscript of the 'Scotichronicon,' at Brechin Castle, was also written by him. According to some manuscript notes of Buchanan's, Mackulloch was a monk at Scones.
[Dempster's Hist. Eccl. xii. 911; Tanner's Bibl. Brit.-Hib. p. 498; Hearne*s edition of the Scotichronicon, v. 1378, 1380; Skene's edition, vol. i. pp. xvii-xviii, xl.]