Isabella I of Majorca Titular Queen regnant of Majorca (1338–1406) Parents Constance of Aragon, Queen of Majorca James III of Majorca Children Secondotto, Marquess of Montferrat John III, Marquess of Montferrat Theodore II, Marquess of Montferrat Margaret of Montferrat Michael von Reischach Siblings Ferdinand of Majorca-Aragon James IV of Majorca Partners John II, Marquess of Montferrat Konrad von Reischach zu Jungnau