Eberhard I, Count of Berg-Altena
Eberhard IV of Berg, count of Altena, was a son of Adolf IV, Count of Berg and Altena.
He married Adelheid von Arnsberg, a daughter of Heinrich I count von Arnsberg and Ermengarde von Freusburg.
He inherited the eastern territorium of the County of Berg and became the 1st count of Altena from 1161, and Vogt of Werden and Cappenberg. His territories were later divided between his sons Arnold of Altena and Friedrich I of Altena. Before the split between Arnold Altena-Isenberg the eldest and his brother Friedrich Altena-Mark the younger son of Everhard, the ‘Grafschaft Mark’ did not yet exist.
He left children:Oda, married to Simon count von Tecklenburg. They had children:
- * Otto II count von Teklenburg and
- * Oda von Tecklenburg;Arnold of Altena, 1st count of Isenberg, followed by the counts of Limburg Hohenlimburg and Broich;Adolf of Altena, Archbishop of Cologne from 1193 until 1205, and between 1212 and 1214 ;Friedrich I of Altena.