Herbert IV, Count of Vermandois

Herbert IV of Vermandois (1028–1080), Count of Vermandois, was the son of Otto of Vermandois and Parvie (Pavia or Patia).^[1]

Family and children

Herbert married Adele of Valois, daughter of Ralph IV of Valois^[2] and Adele of Bar-sur-Aube. They had:

Adelaide, Countess of Vermandois, (b. Circa 1062 - d. September 23, 1120) - married first to Hugh Magnus,^[3] son of Henry I of France and younger brother of Philip I of France, and second to Renaud II, Count of Clermont-Beauvaisis.
Odo I, Count of Vermandois^[4] (b. circa 1064 - d. after 1085)
Gerard (b. 1066 - d. ?)

Adelaide's husband, Hugh, inherited the countships of Vermandois and Valois upon Herbert's death.^[a]^[5]

^ All of Herbert's lands would go to Hugh upon Herbert's death in 1080, giving the Capetians an important foothold.^[5]

^ Le Jan 2003, p. 322, 535.
^ Crouch 1986, p. 11.
^ Suger 1992, p. 191-192.
^ [De Genere Comitum Flandrisium Notae Parisiensis, in MGH, 1881 https://archive.org/details/sim_monumenta-germaniae-historica_1881/page/256/mode/2up]
^ ^a ^b Gabriele 2008, p. 102.

Crouch, David (1986). The Beaumont Twins:The Roots and Branches of Power in the Twelfth Century. Cambridge University Press.
Gabriele, Matthew (2008). "The Provenance of the Descriptio Qauliter Karolus Magnus: Remembering the Carolingians in the entourage of King Philip I (1060–1108) before the First Crusade". Viator. 39 (2). University of California Press: 93–117.
Le Jan, Régine (2003). Famille et pouvoir dans le monde franc (VIIe-Xe siècle). Publications de la Sorbonne.
Suger (1992). The Deeds of Louis the Fat. Translated by Cusimano, Richard C.; Moorhead, John. Catholic University of America Press.