Attention: Age at marriage (August 31, 1425) below 16 years (15).
She is married to III Sir John Beheaded for treason as a Lancastrian in the War of the Roses 12th Earl of Oxford de Vere.
They got married on August 31, 1425 at Earls Colone, Essex, England, she was 15 years old.
Child(ren):
http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=107001826&pid=1881/ Ancestry.com