Adolf II of Lotharingia was count in Keldachgau and Vogt of Deutz (1002–1041), and was the son of Adolf I of Lotharingia, count in Keldachgau, Vogt of Deutz. He left two sons: * Adolf I of Berg, count of Berg from 1077 until 1082, Vogt of Werden, Deutz, Berg and Gerresheim (died 1086); * Hermann IV, count of Saffenberg and Nörvenich, Vogt of Cornelimünster und St. Martin in Cologne (born 1041, died 1091)