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
Linked to

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

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