Note 506 — Chapter XIII · WILLIAM THE LION—1165–1214.
Reading edition
If the story told by Hemingburgh is true (ad an. 1215, vol. 1, p. 247)—that John’s anger against Eustace de Vesci was occasioned by the rejection of his suit by that baron’s beautiful wife—William may have acquired his knowledge of the disaffection of the English nobles through that very lady, who was his own natural daughter Margaret.