Sir Robert de Willoughby
Sir Robert was born about 1210 in Wiulloughby, Lincoln, Eng.  He died before February 21st, 1258.

 Margaret de Orreby
Margaret was born about 1210 in Orby, Lincoln, Eng.  Margaret is no longer alive.

 Sir William Willoughby
Sir William was born about 1240 in Willoughby, Lincoln, Eng.  He died in 1306 in Austria-Hungary.