What Happened in 1390
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- Jul 1 French and Genuese armada sails out against barbarian pirates
- Sep 11 Lithuanian Civil War (1389-1392): the Teutonic Knights begin a five-week siege of Vilnius
- Oct 29 First trial for witchcraft in Paris
- Dec 27 Anne de Mortimer, claimant to the English throne (d. 1411)
- Jan 12 Peter van Herenthals, Dutch theologist/church historian, dies at 67
- Apr 19 King Robert II of Scotland, first monach of the House of Stewart (1371-90), dies at 74
- Aug 14 John FitzAlan, 2nd Baron Arundel, English soldier, dies at 26
- Sep 23 John I, Duke of Lorraine (b. 1346)
- Oct 9 John I of Castile, King of Castile and León (1379-90), dies after falling off his horse while riding in a fantasia at 32
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List of Years