To be recognized, an ethnic group must have at least 100 years' presence in the country, and its members must be citizens.
[3] After the Fall of Constantinople, some Greeks reached Hungary and found refuge in the court of Matthias Corvinus.
[3] The earliest migrations of Greeks to the territory of present-day Hungary (as part of the Habsburg monarchy) were noted in the 15th and 16th centuries and consisted primarily of isolated highly educated individuals.
[4] Mass migrations did not occur until the 17th century,[4] the largest waves being in 1718 and 1760-1770;[5] they were primarily connected to the economic conditions of the period.
[4] During the reign of Joseph II (1780-1790) mass printing of Greek books began in Hungary.