Angilbert de Ponthieu
Angilbert was born about 0722 in Ponthieu, Ain, France.  He died on February 18th, 0813.

 Bertha of France
Bertha was born about 0775 in Aachen, Nordheim, Westphalen.  She died on March 11th, 0828.

 Nithard de Ponthieu
Nithard was born in 0791.  He died at the age of 53 in 0844.