Count of Ponthieu William de Montgomery de Talvas II & Alice Capet 
They had a daughter named Marie.
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Personal Details
Count of Ponthieu William de Montgomery de Talvas II
William was born in 1179.1 He died at the age of 42 on October 6th, 1221.1
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Children
Countess of Ponthieu & Montreuil Marie de Montgomery de Talvas
Marie was born on April 17th, 1199 in Aumale, Normandie.2 She died at the age of 51 in September 1250 in Normandie.2
1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I8702&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33082&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33082&style=TABLE