- Source: Fulcuich
Fulcuich (Fulcois) Count of Mortagne, son of Rotrou, Seigneur de Nogent. It has been conjectured that Fulcuich's ancestor was Hervé I, Lord of Mortagne-au-Perche, through his supposed mother, Hildegarde de Mortagne et Perche, wife of Rotrou, who is a known daughter of Hervé.
Fulcuich married Melisende, Viscountess of Châteaudun, daughter of Hugues, Viscount of Châteaudun, and Hildegarde of Perche. Fulcuich and Melisende had two children:
Geoffrey II Viscount of Châteaudun, I Count of Perche.
Hugues du Perche
Fulcuich was presumably succeeded as count by his son Geoffrey.
Male-line descendants
Male, male-line, legitimate, non-morganatic dynasts who either lived to adulthood, or who held a title as a child, are included.
References
Sources
Kerrebrouck, Patrick van, Nouvelle histoire généalogique de l'auguste maison de France, vol. 1: La Préhistoire des Capétiens. 1993.
Reuter, Timothy (Editor), The New Cambridge Medieval History, Volume III, 900-1024, Cambridge University Press, 1999
Weir, Alison (2008). Katherine Swynford: the story of John of Gaunt and his scandalous duchess. London: McClelland & Stewart. ISBN 9780771088575.