Henry De+ Beaumont
Henry De+ was born before 1387.

 Elizabeth+ Willoughby
Elizabeth+ was born about 1388 in Parham, England.

 John+ Beaumont
John+ was born in 1409 in Falkingham Castle, Lincolnshire, England.  He died at the age of 51 on July 10th, 1460 in Battle of Northampton, Northamptonshire, England.