Henry of Almain was the song of one of the wealthiest men in Europe who joined what?
Richard, 1st Earl of Cornwall Richard (5 January 1209 – 2 April 1272), second son of John, King of England, was the nominal Count of Poitou (1225-1243), Earl of Cornwall (from 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.
Oldřich, Duke of Bohemia Oldřich (Latin: "Odalricus, Udalrichus" , German: "Odalric, Udalrich" ;  975 – 9 November 1034), a member of the Přemyslid dynasty, was Duke of Bohemia from 1012 to 1033 and briefly again in 1034. His accession to the Bohemian throne marked the start of a phase of stability after a long period of internal dynastic struggles. Under his rule, the Moravian lands were reconquered from Polish occupation.