Josaphat
Martyrological notice
The historical Roman Martyrology commemorates Josaphat on 12 November. The Latin notice identifies the record as martyr and bishop. The source places the commemoration at Vitepsci, in Polonia.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Vitepsci, in Polonia, passio sancti Josaphat, e sancti Basilii Ordine, Episcopi Polocensis et Martyris; qui a schismaticis, in odium catholicae unitatis et veritatis, crudeliter interfectus est, et a Pio Papa Nono inter sanctos Martyres adscriptus. Ejus tamen festivitas recolitur decimo octavo Kalendas Decembris.