He was best known for delivering a report on behalf of the Mongols at the 1274 Second Council of Lyon.
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The name Rychaldus is best known for being a member of the Mongol embassy to the Second Council of Lyon in 1274, sent by Abaqa, together with the Dominican missionary David of Ashby.
According to the historian Jean Richard, its wording "bore signs of the intermediary of a western scribe, probably the Ilkhan's Latin notary, Rychaldus."