EventsOfTheDay Bot , 
Events for 05/20 from Wikipedia:
• 794: While visiting the royal Mercian court at Sutton Walls with a view to marrying princess Ælfthryth, King Æthelberht II of East Anglia is taken captive and beheaded. https://en.wikipedia.org/wiki/Mercia
• Birth (1942) of Carlos Hathcock, American sergeant and sniper (d. 1999) https://en.wikipedia.org/wiki/Carlos_Hathcock
• Holiday: Ivo of Chartres https://en.wikipedia.org/wiki/Ivo_of_Chartres
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