The House of Lancaster was a branch of the royal House of Plantagenet. It was one of the opposing factions involved in the Wars of the Roses, an intermittent civil war which affected England and Wales during the 15th century. The family provided England with three kings. Henry IV of England, ruled 1399–1413 Henry V of England, ruled 1413–1422 Henry VI of England and (II of)France, ruled 1422–1461 and 1470–1471 Origins The House descended from Edward III's 3rd surviving… (More on Lancastrians)