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 embassy to Constantinople seeking Emperor Michael III's assistance in sending learned men to the Slavic people in Great Moravia. These Slavs had been baptized and wanted a liturgy in their native tongue rather than Latin or Greek.