16 September – On this day

Owain Glyndŵr was a Welsh ruler and the last native Welshman to hold the title Prince of Wales, when followers declared him thus, on this day in 1400. He instigated a fierce and long-running but ultimately unsuccessful revolt against the English rule of Wales.

Glyndŵr was a descendant of the Princes of Powys through his father, and of those of Deheubarth through his mother. On 16 September 1400, Glyndŵr instigated the Welsh Revolt against the rule of Henry IV of England. The uprising was initially very successful and rapidly gained control of large areas of Wales, but it suffered from key weaknesses – particularly a lack of artillery, which made capturing defended fortresses difficult, and of ships, which made their coastlands vulnerable. The uprising was eventually overborne by the superior resources of the English. Glyndŵr was driven from his last strongholds in 1409, but he avoided capture and the last documented sighting of him was in 1412.

He twice ignored offers of a pardon from his military nemesis, the new king Henry V of England, and despite the large rewards offered, Glyndŵr was never betrayed to the English. His death was recorded by a former follower in the year 1415.