Henry IV

Born 1366 (maybe 1367). Died 1413. House of Plantagenet, Earl of Derby, King of England and Lord of Ireland (1399–1413). Son of John of Gaunt, Duke of Lancaster and Blanche of Lancaster, Countess of Derby, grandson of Edward III.

Sources:

http://www.britannia.com/history/monarchs/mon34.html

http://www.thepeerage.com/p10187.htm#i101863

http://www.mittelalter-genealogie.de/mittelalter/koenige/england/heinrich_4_koenig_von_england_+_1413.html

http://genealogics.org/getperson.php?personID=I00004903&tree=LEO