In a letter from around the time of Manuel II's death (July 21, 1425), Pope Martin V called Theodore II emperor of Constantinople (ad Theodorum imperatorem constantinopolitanum) but the crown actually passed to his older brother John VIII.
Nunha carta ao redor do tempo da morte de Manuel II (21 de xullo 1425), o Papa Martiño V chamou a Teodoro II emperador de Constantinopla (ad Theodorum imperatorem constantinopolitanum), pero en realidade a coroa pasou ao seu irmán maior Xoán VIII.