Gerberga of Lower Lorraine (975-1019), Countess of Louvain, was the daughter of Charles, Duke of Lower Lorraine, himself the son of Louis IV of France and Gerberga of Saxony. Her mother was Adelaide/Agnes de Vermandois.
Personal life She married Lambert I, Count of Louvain and they had: Henry I Lambert II Matilda (also called Maud), who married Eustace I, Count of Boulogne Reginar
References
Sources