ANDREA di LONGJUMEAU. — French Dominican, who lived in the thirteenth century. He was commissioned, together with others, by s. Luigi, king of France, to go to Constantinople to retrieve the relic of the holy crown (1238). Sent by Pope Innocent IV to the “King of the Tartars,” he reached Tabris in Persia, where he made contact with a Mongol leader (1245–47). He accompanied s. Luigi on the crusade (1248–54) and was sent by him to the Great Khan of the Mongols, Güyük, whom he found dead (1249–51). S. Luigi, on his deathbed, recalled a mission by Friar A. in Tunisia (between 1254 and 1270), otherwise unknown. He knew Arabic and Persian. He left no account of his journeys.
BIBL.: P. Pelliot, Les Mongols et la papauté, in Revue de l'Orient chrétien, 23 (1922–23), pp. 3–30; 24 (1924), pp. 225–335; 28 (1931–32), pp. 3–84; (this last article is devoted entirely to Friar A. di Longjumeau); G. Soranzo, Il papato, l'Europa cristiana e i Tartari, Milan 1930, passim.