May 15
day of the year

May 15 is the 135th day of the year (136th in leap years) in the Gregorian calendar; 230 days remain until the end of the year.
Events
Pre-1600
221 – Liu Bei, Chinese warlord, proclaims himself emperor of Shu Han, the successor of the Han dynasty.
392 – Emperor Valentinian II is assassinated while advancing into Gaul against the Frankish usurper Arbogast. He is found hanging in his residence at Vienne.
589 – King Authari marries Theodelinda, daughter of the Bavarian duke Garibald I. A Catholic, she has great influence among the Lombard nobility.
756 – Abd al-Rahman I, the founder of the Arab dynasty that ruled the greater part of Iberia for nearly three centuries, becomes emir of Cordova, Spain.
908 – Constantine VII is crowned Byzantine co-emperor.
1194 – Michael the Syrian reconsecrates the Mor Bar Sauma Monastery, which he reconstructed after its destruction by a fire. The monastery stays a center of the Syriac Orthodox Church until the end of the thirteenth century.
1252 – Pope Innocent IV issues the papal bull ad extirpanda, which authorizes, but also limits, the torture of heretics in the Medieval Inquisition.
The public source identifies “May 15” as day of the year. This brief keeps that definition visible, then builds a research path around year.
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This entry incorporates text from “May 15” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.