In the Vita Cyrilli, Rastislav, the duke of Moravia, sent an embassy to Constantinople asking Emperor Michael III to send learned men to the Slavs of Great Moravia, who being already baptised, wished to have the liturgy in their own language, and not Latin and Greek.
In the Vita Cyrilli, Rastislav, duke of Moravia, sent an envoy to Constantinople requesting Emperor Michael III to send scholars to the Slavic population in Great Moravia. These Slavs had been baptized and desired a liturgy in their own language rather than Latin or Greek.