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.
Ia dilahirkan pada tanggal 2 Februari 1426, dan diakui oleh Cortes di Pamplona, tanggal 9 Agustus 1427, sebagai ahli waris Carlos IV yang sah, dan Blanca II di dalam suksesi ibunda mereka.