 In the aftermath of Constantinople's fall, one of the most pressing threats to the new Ottoman regime was the possibility that one of Constantine XI's relatives would secure support and return to reclaim the empire.However, it soon became apparent Constantine's closest relatives, his brothers in the Morea, represented little more than a nuisance to Mehmed II and they were thus allowed to keep their titles and lands as Ottoman vassals.Under their rule, the Morea was transformed into somewhat of a Byzantine government-in-exile, as Byzantine refugees from Constantinople and elsewhere fled to their courts, some even wishing to proclaim Demetrios, the elder brother, as Constantine's successor and the new Emperor and Autocrat of the Romans.