Battle of Tinchebray

September 28, 1106

Henry I of England crushed his brother Robert Curthose in a meadow in Normandy and locked him in Cardiff Castle for the remaining twenty-eight years of his life. The duchy and the kingdom were reunited under a single Norman ruler for the first time since the Conqueror. Robert spent his captivity learning Welsh and writing poetry, a gentler occupation than the ones that had lost him his crown.