Sir Owain Tudor
Owain was born about 1400.  He died  due to beheaded on February 4th, 1460.

 Princess Catherine de Valois of France
Catherine was born on October 27th, 1401 in Hotel de St Pol, Paris, Seine, France.  She died at the age of 35 on January 3rd, 1437 in St Saviour's Abbey, Bermondsey, Surrey, England.  She was buried in Westminster Abbey, London, Middlesex, England.

 Tacina Tudor
Tacina was born about 1425.