Irene of Montferrat Byzantine empress (1274–1317) Parents Beatrice of Castile, Marchioness of Montferrat William VII, Marquess of Montferrat Children Simonida Demetrios Palaiologos John Palaiologos Bartholomaios Palaiologos Theodore I Siblings Margaret of Montferrat John I, Marquess of Montferrat Partners Andronikos II Palaiologos