John Byron
John was born in 1387 in Clayton, Lancaster, England.  He died at the age of 78 in 1465 in Clayton, Lancaster, England.

 Margery Boothe
Margery was born in 1380 in Barton, Cheshire, England.  She died after 1416.

 Helena Byron
Helena was born in 1416 in Clayton, Lincolnshire or Lancashire, England.  She died before 1466.  She was buried in Grey Friars, London, England.