Before 1080 Herbert Vermandois IV Count Vermandois (age 52) and Adela Valois Countess Blois and Vermandois were married. She by marriage Countess Vermandois. He the son of Otto Vermandois I Count Vermandois and Pavia Countess Vermandois.

In 1103 Renaud II Count Clermont (age 28) and Adelaide I Countess Vermandois were married. He by marriage Count Vermandois. She the daughter of Herbert Vermandois IV Count Vermandois and Adela Valois Countess Blois and Vermandois.

Adalbert "The Pious" I Count Vermandois and Gerberge Reginarids Countess Vermandois were married. She by marriage Countess Vermandois. The difference in their ages was 20 years. She the daughter of Gilbert Reginarids I Duke Lorraine and Gerberga Saxon Ottonian Queen Consort West Francia. He the son of Herbert Vermandois II Count Vermandois II Count Soissons II Count Meaux and Adela Capet Countess Vermandois, Soissons and Meaux.

Herbert Vermandois I Count Vermandois and Bertha Morvis Countess Vermandois were married. She by marriage Countess Vermandois. He the son of Pepin Vermandois I Count Vermandois.

Herbert Vermandois III Count Vermandois and Ermengard of Bar Countess Vermandois were married. She by marriage Countess Vermandois. He the son of Adalbert "The Pious" I Count Vermandois and Gerberge Reginarids Countess Vermandois.

Otto Vermandois I Count Vermandois and Pavia Countess Vermandois were married. She by marriage Countess Vermandois. He the son of Herbert Vermandois III Count Vermandois and Ermengard of Bar Countess Vermandois.