Siegfried Archbischop von Bremen

http://fmg.ac/Projects/MedLands/BRANDENBURG,%20PRUSSIA.htm#Albrecht...

5. SIEGFRIED before 1138-[24 Oct/15 Nov] 1184, bur Bremen Cathedral). The Cronica Principum Saxonie names (in order) "Ottonem, Bernardum ducem Saxonie, Sifridum episcopum Brandenburgensem, postea archiepiscopum Bremensem et Hadewigem [uxor] Otto marchio Misenensis" as children of "Albertus Ursus"[96]. A 13th century genealogy names (in order) "Albertum, Berenhardum, Fridericum, Hermannum de Horlamund et Zeifridum Bremensem archiepiscopum" as the five sons of "Albertus de Hanhalde marchio"[97]. Canon of the Franciscans at Magdeburg in 1164. His election to the bishopric of Bremen, engineered by his father in 1168, was a direct challenge to the authority of Heinrich "der Löwe" Duke of Saxony, but he was prevented from assuming the position by Duke Heinrich[98]. Bishop of Brandenburg 1173 until 1180. Elected Archbishop of Bremen end 1179, installed in 1180.