"Richard (5 January 1209 – 2 April 1272), second son of John, King of England, was the nominal Count of Poitou (1225–43), Earl of Cornwall (from ...
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1225) and King of Germany (from 1257). He was one of the wealthiest men in Europe and joined the Barons´ Crusade, where he achieved success as a negotiator for the release of prisoners and assisted with the building of the citadel in Ascalon." - (en.wikipedia.org 31.01.2020)