John (count of Gravina, 1315-1336) [permalink]
See also
http://viaf.org/viaf/81558019
See also
https://www.wikidata.org/wiki/Q576665
Logical part of
Historical Persons and Groups
Linked to

Co 121 (Frankish Achaean denier of John of Gravina from Glarentza)

Co 126 (Frankish Achaean denier of John of Gravina from Glarentza)