James Gairdner and John Horace Round, 1911 Encyclopædia Britannica, Volume 21… (1911)
“ A crisis occurred in the fortunes of the family in the reign of Henry VIII. on the death of Henry, the 6th earl (c. 1502-1537) , whose brothers Sir Thomas and Sir Ingelram Percy, much against his will, had taken part in the great insurrection called the Pilgrimage of Grace. A thriftless man, of whom it is recorded that in his youth he was smitten with the charms of Anne Boleyn, but was forced to give her up and marry a woman he did not love, he died childless, after selling many of the family estates and granting the others to the king. ”
