Mathieu, Jean-Noel, Recherches sur les Premiers Comtes de Dammartin, in Paris et Ile-de-France: memoires Federation des societes historiques et archeologiques de Paris et de I'lle-de-France. Vol 47 (1996). NYPL L-10 2324 (OFFSITE, request in advance). Available (for purchase) at http://cths.fr/ed/edition.phg?id=1632. Information from this source tagged as [Ref: Mathieu Dammartin p[0-9]*].
Sources for birth and parent Information
parents:
[Ref: Mathieu Dammartin p60]
Sources with Information about marriage to Clemence Of Bar-Le-Duc
date:
first marriage of Clemence [Ref: Mathieu Dammartin p60],
names:
son of Pierre Count of Dammartin & Clemence de Bar [Ref: Mathieu
Dammartin p60]