William De Willoughby
William was born about 1245 in Willoughby, Lincolnshire, England.  He died before March 29th, 1300.

 Alice Beke
Alice was born about 1250 in Eresby, Lincolnshire, England.  She died before May 1311 in Eresby, Lincolnshire, England.

 Robert De Willoughby
Robert was born about 1260 in Silsby, Lincolnshire, England.  He died about March 25th, 1317.

 Thomas Willoughby
Thomas was born about 1268 in Willoughby, Lincolnshire, England.