May 1 - Eastern Orthodox Church calendar - May 3
St. Boris-Michael, Prince and baptizer of Bulgaria.
St. Wiborada. (Cathedral library of St. Gallen, Codex 586, S. 230. c. 1430-1436).
St. Athanasius III Patelaros, Ecumenical Patriarch of Constantinople.
St. Matrona the Blind, the Righteous Wonderworker of Moscow.