Adolf IV, Count of Berg

Adolf IV of Berg count of Berg from 1132 until 1160 and of Altena (died after 1161), son of Adolf III of Berg count of Berg and Hövel.

He married (1st) Adelheid von Arnsberg, a daughter of Heinrich count von Rietberg; then (2nd) Irmgard (?)

von Schwarzenberg, a daughter of Engelbert von Schwarzenberg.

He built the Schloss Altena, and built Altenberg Abbey (1133) where he enters in 1160.

He had issue from his first marriage: and from his second marriage: Adolf IV, Count of Berg is named Adolf II, Count of Berg in the Netherlands and in Germany.

Castle of Altena
At the beginning of the 12th century Adolf II of Berg donated the site of their old ancestral castle, Schloss Berg, to Cistercian monks from Burgundy. Adolf IV later built the Altenberg Abbey .