Sir James Tyrell of Buttsbury
James was born about 1290 in Buttsbury, Chelmsford, Essex, England.  He died after 1380.

 Margaret Heron
Margaret was born about 1304 in Heron, East Horndon, Essex, England.  She died on May 27th, 1378 in Newcastle-on-Tyne, Northumberland, England.

 Sir Walter Tyrell of Heron
Walter was born about 1320 in Heron, East Horndon, Essex, England.