Gallus, Robertus a French mystic, lived at Orange in 1291. He derived his name from his French origin, and was provincial of a monastic order. According to Ouden, he was very pious, but of little note. He believed himself endowed with the gift of revelation, and wrote several works in this line. The only one which has come down to us was published at Paris in 1513, at the house of Henry Stephens, under the editorship of Le Fevre of Staples, and is entitled Liber Trium Virorum (namely, Hermas, Uguelin, and Robert Gallus himself), et Trium Spiritualium Virginum (the princesses Hildegarde, Elisabeth, and Mechtilde). See Hoefer, Nouv. Biog. Generale, s.v.