Events
Date of Birth: after 1178.
Place of Birth: unknown.
The date is given by Cawley.
Date of Death: 6 October 1221.
Place of Death: unknown.
The date is given by Brunel (p. vi).
Place of Burial: Abbaye de Valloires, Somme.
The place is given by Cawley.
Relationships
Father: Jean (I), count of Ponthieu.
This relationship is given by Cokayne (p. 97), by Nieus, and by Brunel (p. vi).
Mother: Béatrix de Saint-Pol.
This relationship is given by Cokayne (p. 97) and by Nieus.
Spouse: Alix de France.
This relationship is given by Cokayne (p. 97) and by Cawley.
Children:
Marie de Ponthieu (died September 1250) married Simon de Dammartin.
Evidence
Evidence for relationships:
From the Cartulaire du comté de Ponthieu:
From XVII from 1199: "...de assensu uxoris mee Aalidis filie Ludovici regis Francie..."
From XXIII: "...quem Johannes, pater meus, et Beatrix, mater mea, in elemosinam contulerunt..."
From XXIV: "...assensu et voluntate Marie filie mee et Aelis uxoris mee..."
From XXIX: "...Ego et Aalais, uxor mea, comitissa Pontivi, et Maria, filia mea presentem paginam sigillorum nostrorum munimine roboravimus..."
XXXI: "...Ego Willelmus, comes Pontivi et Monstreoli, notum facio omnibus tam presentibus quam futuris quod ego, de assensu, concessione et voluntate Aalis, uxoris mee, Ludovici Francorum filie, et Marie filie mee, dedi..."
XXXII: "...Ego Willelmus, comes Pontivi et Monstreoli, notum facio tam presentibus quam futuris quod ego, de assensu et concessione Aalis, uxoris mee, et Symonis de Bolonia, generis mei, et Marie, filie mee, uxoris ejus..."
XXXIV: "...Huic donationi interfuerunt Hugo, comes Sancti Pauli, avonculus [sic] meus, Guido, patronus meus, ..."
There are other charters mentioning the same relationships.
References
Brunel, Clovis. Recueil des actes des comtes de Pontieu (1026-1279), (Paris, 1930).
Cartulaire du comté de Ponthieu (M. Ernest Prarond) (Abbeville, 1897).
Cawley, Charles. GUILLAUME (II) "Talvas" de Ponthieu in Medieval Lands: A prosopography of medieval European noble and royal families.
Cokayne, G.E., and G.W. Watson. The Seize Quartiers of the Kings and Queens of England. (1896).
Nieus, Jean-François. Un pouvoir comtal entre Flandre et France: Saint Pol, 1000 - 1300 (De Boeck & Larcier s.a., 2005; Brussels).