Vallahades
The Vallahades (Greek: Βαλαχάδες) or Valaades (Βαλαάδες) were a Greek-speaking, Muslim population who lived along the River Haliacmon in southwest Greek Macedonia, in and around Anaselitsa (modern Neapoli) and Grevena. They numbered about 17,000 in the early 20th century. They are a frequently referred-to community of late-Ottoman Empire converts to Islam, because unlike most other such communities of Greek Muslims in Ottoman Macedonia the Vallahades retained many aspects of their Greek culture and continued to speak Greek for both private and public purposes. Most other Greek converts to Islam from Ottoman Macedonia, Thrace, and Epirus generally adopted the Turkish language and culture and thereby assimilated into mainstream Ottoman society.
Name
The name Vallaades comes from the Turkish-language Islamic expression vallah ("by God!"), which was supposedly the only Arabic or Turkish these relatively late Greek Muslim converts ever bothered to learn. Even their call to prayer was said to be un-canonical and in Greek. Though some Western travellers speculated that 'Vallaades' is connected to the ethnonym Vlach, this is improbable, as the Vallahades were always Greek-speaking with no detectable Vlach influences.