: 14th century
- 15th century
- 16th century
Decades: 1370s 1380s 1390s 1400s 1410s - 1420s - 1430s 1440s 1450s 1460s 1470s
Years: 1421 1422 1423 1424 1425 - 1426 - 1427 1428 1429 1430 1431
- March 6 - Battle of St. James (near Avranches). An English army under John, Duke of Bedford defeats the French under Arthur de Richemont, forcing the Duke of Brittany to recognize English suzerainty.