Altman a monk OF HAUTEVILLIERS, in the diocese of Rheims, who lived about A.D. 850, wrote the Life of St. Sidulfus, the confessor (see Mabillon, Sec. Bened. i, 368). Sigbertus of Gemblours attributes to him a Life of Nivars, bishop of Rheims; also of the Empress Helena and others. See Cave, Historia Literaria, s.v.