Henry IV, the first Lancastrian king of England, ascended to the throne in 1399 after deposing his cousin, King Richard II. His reign was marked by political instability and rebellions, as he faced challenges from various factions and discontented nobles. Despite these difficulties, Henry IV managed to consolidate his power and establish the Lancastrian dynasty, which would rule England for over a century. He also played a significant role in the Hundred Years' War against France, launching successful campaigns that boosted English morale and prestige. Although his reign was often tumultuous, Henry IV's determination and political acumen helped secure the Lancastrian claim to the throne and paved the way for a period of relative stability and prosperity in England.
