William III (Guillaume) of PONTHIEU, Count of Ponthieu & Alice (Alix) , Princess of FRANCE 
They had a daughter named Marie (Jeanne) .
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Personal Details
William III (Guillaume) of PONTHIEU, Count of Ponthieu
William III (Guillaume) of was born in 1179 in Ponthieu, France. He died at the age of 42 on October 6th, 1221 in France.
Alice (Alix) , Princess of FRANCE
Alice (Alix) , Princess of was born about 1170 in France. She died after July 18th, 1218.
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Children
Marie (Jeanne) PONTHIEU, Count of Ponthieu
Marie (Jeanne) was born on April 17th, 1199. She died at the age of 51 in September 1250.