Thomas Usk, Chaucerian and Other Pieces — Notes to the Foregoing Pieces (1897)
“ The sense is—'For he who gets a little bliss of love may very soon find that his heir has come of age, unless he is always devoted to it.' This is a mild joke, signifying that he will soon find himself insecure, like one whose heir or successor has come of age, and whose inheritance is threatened. On the other hand, 'to have one's hair of age' is wholly without sense. ”
