I am trying to find reliable information on the MOTHER for each of Thibault I Troubadour King of Navarre's (1201-1253) children.
It appears that Henri I King of Navarre (who married Blanche d'Artois) is Thibault's son with Marguerite de Bourbon. But, I have seen conflicting sources about 1) the mother of Thibault's daughter Marguerite de Navarre who married Frederick III Duke of Lorraine and 2) the mother of Thibault's daughter Blanche de Navarre who married Jean I de Dreux de Bretagne.
I appreciate any help on this subject!