Inês Castel-Branco wurde am 25 Februar 1982 in Lisbon, Portugal geboren. Sie ist Schauspielerin, bekannt für Snu (2019), Mar Salgado (2014) und Eis (2016).
Daughter of António Mendo [Gagliardini] [da] Graça Caldeira de Castel-Branco, patrilineal great-grandson and great-grandson of a first cousin of the first Viscount of Alter do Chão and great-grandson of a sister and great-grandson of a cousin of the first Baron of Brissos, and wife Maria Luísa Pires Pereira da Costa.