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. 145. Sir Richard Willoughby of Willoughby Knight
[alive in the fifth year of Edward II, i.e. 1312].
B. Burke 1888, The Complete Peerage, p. 1118. Willoughby lineage:
1) Richard Bugg, Lord of Willoughby-upon-the-Wold
2) Sir Richard Bugg (d. 1324); assumed name of Willoughby; purchased
Wollaton 1317 from Sir Roger de Mortein
#1 is either this Richard Willoughby or possibly his father William.