Helena Kantakouzene, Empress of Trebizond second wife of Emperor David of Trebizond (1401–1463) Parents Demetrios I Kantakouzenos Theodore Kantakouzenos Children N. Megale Komnene Anna Komnene Siblings George Palaiologos Kantakouzenos Thomas Kantakouzenos Theodore Kantakouzenos Andronikos Palaiologos Kantakouzenos Partners David II of Trebizond
