Complex sentence: Valdemar (also "Waldemar", born 1157/1158; died April 1235 or 1236 probably in Cîteaux) was a prince of Denmark, Bishop of Schleswig (1182-1208) and Prince-Archbishop of Bremen (1192/1206-1218).
Split into simpler sentences: Valdemar (also "Waldemar", born 1157/1158; died April 1235 or 1236 probably in Cîteaux) was a prince of Denmark. Valdemar officiated as Bishop of Schleswig (1182-1208) and Prince-Archbishop of Bremen (1192/1206-1218).