Oliver St. John
Oliver was born before 1415.  He died after 1441.

 Margaret Beauchamp
Margaret was born before 1412.  She died after 1441.

 John St. John of Bletsoe
John St. John of was born about 1437 in Bletsoe, Bedfordshire & Lydlard Tregoz, England.  He died after 1488.

 Elizabeth St. John
Elizabeth was born about 1441.  She died after 1488.

 Agnes St. John

 Edith St. John

 Mary St. John

 Oliver II St. John