View source for Template:May 21

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[[Image:Constantine and Helen.jpg|100px|Ss. Constantine and Helen]]
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[[Saint]]s [[Constantine the Great|Constantine]] and [[Helen]], [[Equal-to-the-Apostles|Equals to the Apostles]] and rulers of the Roman Empire; 
Martyrs Polyeuctus, Victorinus, and Donatus, at Caesarea in Cappadocia;
Hieromartyr Secundus and those with him, in Alexandria (356);
Saint Adelphios, Bishop of Onouphis, in [[List of Bishops in Byzantine Egypt (A.D. 325 to c.750)|Byzantine Egypt]] (ca.362 or ca.431); 
Saint Boros, [[monk]];
Saint Christopher I, [[List of Patriarchs of Antioch|Patriarch of Antioch]] (967);
Hieromartyrs Timothy, Polius and Eutychius, deacons, in [[w:Mauretania Caesariensis|Mauretania Caesariensis]] (Morocco);
Hieromartyr Valens and Companions, Bishop who was martyred in Auxerre in France along with three children;
Martyr Secundinus, in Cordoba in Spain under Diocletian (ca.306);
Saint [[Hospitius the Hermit]] of Nice (Hospicius of Trier), [[Wonderworker]] (581);
Saint Barrfoin (Bairrfhionn, Barrindus) of [[w:Kilbarron, North Tipperary|Killbarron]] (6th c.);
Saint Gollen (Collen, Colan) of Denbighshire, a saint who has given his name to [[w:Llangollen|Llangolle]]n in Wales (7th c.);
Saint Isberga (Itisberga) of Aire, reputed sister of Charlemagne, nun at Aire (Aria) in the Artois, of which she is the patroness (ca.800);
Saint Ageranus (Ayran, Ayrman) of Beze, a [[monk]] at [[w:Bèze|Bèze]] in France, martyred by the Vikings (888);
Saint Theobald (Thibaud), Archbishop of Vienne (970-1001);
Blessed Constantine (Yaroslav), prince, and his children Saints Michael and Theodore, [[Wonderworker]]s of Murom (1129);
Saint Cyril II (Kirill), Bishop of Rostov (1262);
Saint Basil of Ryazan, Bishop (1295) (see also [[April 12]]);
Saint Helen of Decani, Serbia, Princess (ca. 1350);
Saint Cassian the Greek, [[monk]] of Uglich and [[Wonderworker]] (1504);
Saint Agapitus of Markushev (Vologda) the Hieromartyr, [[Abbot]] (1584);
Saint Constantine the [[Fool-for-Christ]], of Novotorzanin, Russia (ca.16th c.);
New Martyrs King Constantine Brancoveanu of Wallachia and his four sons: Constantine, Stephen, Radu, and Matthew, and his counsellor Ianache (1714) (see also [[August 16]]);
[[Righteous]] New-Martyr Pachomius of Patmos ([[Mount Athos]]) (1730);
[[Synaxis]] of Hieromartyrs of [[w:Karelia|Karelia]];
[[Synaxis]] of Hieromartyrs of [[w:Ufa|Ufa]]; 
'''Other Commemorations''':
Synaxis of the [[Theotokos of Vladimir|“Vladimir” Icon of the Most Holy Theotokos]] (1521) (also [[June 23]] and [[August 26]]);
Synaxis of the "Virgin of Tenderness" Icon of the Most Holy Theotokos from Pskov-Pechersk (1524) (also [[June 23]], [[August 26]], [[October 7]] and the 7th Sunday of Pascha);
Uncovering of the [[relics]] (1998) of St. Andrew Ogorodnikov, [[Fool-for-Christ]] of Simbirsk (1841);
Repose of Elena Pavlova of Chepel, Kharkov (1885);
Repose of Elder Isaac of [[Dionysiou Monastery (Athos)|Dionysiou Monastery]] of [[Mount Athos]] (1932);

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[[Category:Calendar day templates|May 21]]
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