Theodora Kantakouzene Empress consort of Alexios IV of Trebizond (1382–1426) Parents Theodore Kantakouzenos Children Eudokia Komnene, Princess of Trebizond unknown daughter Comnene Alexander of Trebizond Maria of Trebizond David II of Trebizond Despina Khatun John IV of Trebizond Siblings George Palaiologos Kantakouzenos Thomas Kantakouzenos Irene Kantakouzene Partners Alexios IV of Trebizond