Anselm of Havelberg, 1997 CIP t.p. (Anselm of Havelberg)
LC manual cat., Sept. 8, 1997 (hdg. Anselmus, Bp. of Havelberg, d. 1158)
New. Cath. Ency., 1981 (Anselm of Havelberg; archbishop, author, imperial envoy to the Greeks; d. Milan, Aug. 12, 1158)
Wikipedia 17 Nov. 2012 (Anselm of Havelberg (ca. 1100-1158) was a German bishop and statesman, and a secular and religious ambassador to Constantinople. He was a Premonstratensian, a defender of his order and a critic of the monastic life of his time, and a theorist of Christian history)