Thomas Finlayson Henderson, Dictionary of National Biography… (1889)
“ The reformer was the son of Sir John Erskine, fifth laird of Dun, by his wife, Margaret Ruthven, countess dowager of Buchan, and was born in 1509. Four of his near relatives—his grandfather, father, granduncle, and uncle—were slain at Flodden in 1513. The wills and inventories of the grandfather and father (‘Dun Papers’ in Spalding Club Miscellany, iv. 10–16) prove that the family was exceptionally wealthy. His uncle, Sir Thomas Erskine of Brechin, secretary to James V, now became his guardian, and was specially careful to give him a good education. ”
