On 02 Feb 1387 [her father] King John I of Portugal (age 35) and Philippa Lancaster Queen Consort Portugal (age 26) were married. She by marriage Queen Consort Portugal. She the daughter of John of Gaunt 1st Duke Lancaster (age 46) and Blanche Plantagenet Duchess Lancaster. He the son of Peter I King Portugal and Inês Castro. They were half fourth cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a granddaughter of King Edward III of England.

On 26 Nov 1405 Thomas Fitzalan 10th Earl Surrey 12th Earl Arundel (age 24) and Beatrice Aviz Duchess Exeter (age 23) were married. King Henry IV of England (age 38) and Joanna of Navarre Queen Consort England (age 35) were present at their wedding feast. She the illegitmate daughter of King John I of Portugal (age 53) and Ines Peres. He the son of Richard Fitzalan 9th Earl Surrey 11th Earl Arundel and Elizabeth Bohun Countess Arundel and Surrey. He a great x 2 grandson of King Edward "Longshanks" I of England.

In 1415 Gilbert Talbot 8th Baron Strange Blackmere 5th Baron Talbot (age 32) and Beatrice Aviz Duchess Exeter (age 33) were married. She the illegitmate daughter of King John I of Portugal (age 63) and Ines Peres. He a great x 3 grandson of King Edward "Longshanks" I of England.

After 19 Oct 1418, and before 1427, Thomas Fettiplace (age 35) and Beatrice Aviz Duchess Exeter (age 36) were married. She the illegitmate daughter of King John I of Portugal (age 66) and Ines Peres.

On 20 Jan 1433 John Holland 2nd Duke Exeter (age 37) and Beatrice Aviz Duchess Exeter (age 51) were married. She by marriage Duchess Exeter. She the illegitmate daughter of King John I of Portugal (age 81) and Ines Peres. He the son of John Holland 1st Duke Exeter and Elizabeth Lancaster Duchess Exeter. He a great grandson of King Edward III of England.