Thierry II De Ponthieu

Thierry II De was born about 0685.  Thierry II De's father was Walmar de Boulogne and his mother was Ponthieu 2.  His paternal grandparents were Wilmer de Boulogne and Ada; his maternal grandfather was Thierry I de Ponthieu. He had a brother named Thierry II.  He was the younger of the two children.  He died in 0734.

He had a biological daughter named Ponthieu 1.