The Visitation of the County of Nottingham In the Years 1569 and
1614, edited by G.W. Marshall 1871, Publications of the Harleian
Society, vol. 4, p. 146. Sir Hugh Willoughby of Willoughby Knight.
B. Burke 1888, The Complete Peerage, p. 1118.
Sir Hugh Willoughby, Knight of Willoughby (era of Henry VI, i.e. 1422-
1471)
a) Richard of Willoughby, died without children 1471
b) Robert of Wollaton
c) Baldwin of Grendon, Northamptonshire