By his first wife , Konstantin had at least one daughter and possibly a son :
Konstantin married as his second wife Eudokia of Trebizond , daughter of Emperor Alexios III of Trebizond and Theodora Kantakouzene .
By Konstantin 's first wife Konstantin Konstantin had at least one daughter and possibly a son :
Konstantin married as his second wife Eudokia of Trebizond , daughter of Emperor Alexios III of Trebizond and Theodora Kantakouzene .