Heinrich von Siegburg was a twelfth century Bishop of Poznań in Poland, he was little known for his career or episcopal work but was active under the rule of Bolesław III Wrymouth.
A German, his home monastery was Michaelsberg Abbey, Siegburg, where he was for a time chaplain to Anno II, Archbishop of Cologne.
According to Gerard Labuda he is the "abbot" in the Life of Saint Henry who was familiar with Otto of Bamberg.[1] At any rate Heinrich arrived in Poland from Germany with Otto about 1080 and became Bishop of Poznań in 1103.
Heinrich died on 8 July in either 1105 or 1109.[2]