Ten thousand martyrs
…Orthodox Synaxarion, where it is referred to as the "Myriads of Holy Martyrs, by the sword, at Nicomedia". Francis Mershman identifies these as those 20,000 Martyrs of Nicomedia killed during the Diocletianic Persecution. The second entry in the Roman Martyrology is for June 22 on Mount Ararat; however, this appears to be based…