Heinrich von Siegburg
According to Gerard Labuda he is the "abbot" in the Life of Saint Henry who was familiar with Otto of Bamberg. At any rate Heinrich arrived in Poland from Germany with Otto about 1080 and became Bishop of Poznań in 1103.
Heinrich died July 8 in either 1105 or 1109.
- Gerard Labuda: Historical Sketches tenth and eleventh century: the History of the organization of the Church in Poland in the early Middle Ages, Poznań 2004, pages 382-384
- Tadeusz Wasilewski, "Church regal[clarification needed] in tenth and eleventh century and his superior Polish bishop", Historical Quarterly, vol. 92, 1985, p. 752
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