Irmgard of Berg
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Irmgard of Berg, heiress of Berg (died 1248-9), daughter of Adolf VI count of Berg (1185-1218) and Berta von Sayn.
She married in 1217 Henry IV Duke of Limburg (since 1226), who became count of Berg in 1225. Henry IV of Limburg-Berg died on 25 Feb 1246; their descendants were counts of Berg, the county of Berg leaving the descendance of the Ezzonen.