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.
Maona A maona (Arabic: معونة‎ ‎ "ma‘ūnah" 'help', Arabic: معاونة‎ ‎ "mu‘āwanah" 'mutual help') or Societas comperarum was a medieval Italian association of investors formed to manage the purchased shares ("loca" or "partes") of the revenue due to the relevant city-state through tax farming; the shares were individually sold to wealthy merchants, but the collection could be difficult and so these merchants would band together.