In the Battle of Tinchebray in Normandy, the invading King Henry I of England captured his brother Robert Curthose. Battle of Tinchebray: The Battle of Tinchebray took place on 28 September 1106, in Tinchebray, Normandy, between an invading force led by King Henry I of England, and the Norman army of his elder brother Robert Curthose, the Duke of Normandy. Henry's knights won a decisive victory: they captured Robert, and Henry imprisoned him in England and then in Wales until Robert's death in 1134. September 28, 1106. Wiki link