The Chronica Andrensis names "Mathilde…filia…Reinaldi quondam comitis Bolonie" as the wife of "Philippus frater Ludovici regis Gallie".
She succeeded in 1223 as Ctss de Dammartin and in 1227 as Ctss de Boulogne. "Mahaud comitissa Bolonie et Clarimontis…et Johanne filie nostre" donated property to the abbey of Sainte-Hoïlde, for the souls of "bone memorie Philippi condam comitis Bolonie et liberorum nostrorum", by charter dated Apr 1239. The De Rebus Hispaniæ of Rodericus Ximenes records the marriage of "Aldefonsum", son of "Aldefonsum" & his wife, and "Matillam…de partibus Franciæ, Boloniæ Comitissam". “Alfonsus, filius…regis Portugaliæ, comes Bolonie” recorded his agreements with “Thomam comitem et Johannam eius uxorem comitissam Flandrensem” by charter dated Nov 1241 which names “…M. comitissa Bolonie uxor nostra”.
Her second marriage is confirmed by the charter dated Jun 1240 under which "Aufonsus filius regis Portigalis comes Bolonie et Matildis uxor sua comitissa Bolonie" confirmed a donation by "Johanni de Bello Monte domini regis cambellano et Ysabelli Buticularie uxori sue". The testament of “Mathildis comitissa Boloniæ”, dated Mar 1241 (presumably O.S.), bequeathed property to “marito meo Alphonso filio...Regis Portugaliæ comiti...Boloniæ” and appointed “ipsum comitem maritum meum, et...Robertum episcopum Belovacensem et...consanguineum meum dominum Matthæum de Tria...et dominum Philippum de Nantholio consanguineum meum” as her executors, with the approval of “Gualtherus de Cestellione et...Joanna eius uxor”. A charter dated Nov 1242 records a declaration by "Mathildis comtissa Bolonie…cum…marito nostro Alfonso filio…regis Portugalie comiti Bolonie" relating to her testament and names "Gaucherus de Castellione et Johanna filia nostra uxor eiusdem, heredes nostri".
The Chronicon Savigniacense records the death in 1258 (presumably O. S.) of "Matildis Comitissa Boloniæ" and the reversion of her county to the king. The Breve Chronicon Alcobacense records that "comitissa Bolonie" was still alive when "rex Dionisius" was born (9 Oct 1261), but had died before the birth of his brother Afonso (8 Feb 1263)... 1
Mathilde married Philippe Tristan "Hurepel" CAPET de France, son of Philippe II "Auguste" CAPET, King of France, and Agnes VON ANDECHS-MERAN, in 1216. (Phillippe Tristan "Hurepel" CAPET de France was born in Jul 1200 and died in Jan 1234 in Corbie, Somme, France.)
contract Compiègne, Oise Aug 1201, contract Saint-Germain-en-Laye May 1210
Mathilde also married Infante dom Afonso III “o Restaurador” DE PORTUGAL, son of Infante dom Afonso II "o Gordo" DE PORTUGAL and Infanta doña Urraca DE CASTILLA, in 1253. Afonso andd Mathilde were divorced in 1253. (Infante dom Afonso III “o Restaurador” DE PORTUGAL was born on 5 May 1210 in Coimbra, Portugal and died on 18 Apr 1279 in Lisboa, Portugal.)