Christian I, Count of OldenburgChristian I, known as "the Quarrelsome", was Count of Oldenburg from 1143 to 1167. He was son of Elimar II, Count of Oldenburg and wife Eilika von Werl-Rietberg, daughter of Count Heinrich von Rietberg.Marriage and issueHe married Kunigunde and had two sons: Maurice, Count of Oldenburg and Christian the Crusader ''.''