Rev. Alban Butler (171173). Volume I: January. The Lives of the Saints. 1866.
St. Glastian, Bishop and Confessor in Scotland
HE was a native of the county of Fife, and discharged in the same, during many years, the duties of the episcopal character with which he was honoured. Amidst the desolation which was spread over the whole country, in the last bloody civil war between the Scots and Picts, in which the latter were entirely subdued, St. Glastian was the comforter, spiritual father, and most charitable protector of many thousands of both nations. He died in 830, at Kinglace in Fifeshire, and was particularly honoured in that country, and in Kyntire. According to the ancient custom of that country, his name is frequently written Mac-Glastian, the word Mac signifying son. See the Breviary of Aberdeen; King in his Calendar, &c.