She was born 2 February 1426, and was acclaimed by the Cortes in Pamplona, 9 August 1427, as the legitimate heir of Charles IV and Blanche II in succession to their mother.
Rođena je 2. veljače 1426. a Sabor (Cortes) u Pamploni proglasio ju je 9. kolovoza 1427, kao legitimnom nasljednicom Karla IV., i Blanke II. po njihovoj majci.