Richard III of England
Richard III (2 October 1452 - 22 August 1485) was King of England from 1483 until his death in 1485 at the age of 32 in the Battle of Bosworth Field. He was the last king of the House of York and the last of the Plantagenet dynasty. His defeat at Bosworth was the last decisive battle of the Wars of the Roses.
After the battle Richard's body was taken to Leicester and buried seemingly with haste and little ceremony in the choir of Greyfriars Priory Church. After the Dissolution of the Monasteries the site was demolished and redeveloped over the years. Eventually the story that his bones had been desecrated and thrown into the River Soar became widely believed.
In 2012 an archaelogical excavation by Leicester University was commissioned by the Richard III Society on the original site and the King's remains were discovered. Richard II was reinterred in Leicester Cathedral in 2015.
His motto was Loyaulté me lie, "Loyalty binds me"; his personal device was a white boar.
Sources: see links below
For more information on how the remains of Richard III were discovered and identified see Looking For Richard.