Welsh independence (Welsh: Annibyniaeth i Gymru) is the political movement advocating for Wales to become a sovereign state, independent from the United Kingdom. Wales was conquered during the 13th century by Edward I of England following the killing of Llywelyn the Last (Prince of Wales). Edward introduced the royal ordinance, the Statute of Rhuddlan, in 1284, causing Wales to lose its de facto independence and the native Welsh principality was incorporated into the Kingdom of England. Owain Glyndŵr, native Prince of Wales restored Welsh independence c. 1400–10, but Henry IV of England eventually regained control of Wales.