John Mowbray
John was born about 1440.  He died on January 17th, 1475.

 Elizabeth Talbot
Elizabeth was born about 1442.

 Anne Mowbray
Anne was born before September 1475.  She died in 1481.

 Margaret Mowbray
Margaret was born before September 1475 in Scotland.  She died on November 19th, 1518 in London, Middlesex, England.