IV Regnier
IV was born in 0950 in Hainult, Belgium.  He died at the age of 63 in 1013.

 Hedwige Avoise Capet
Hedwige Avoise was born about 0972 in Arles, Tolouse, France.  She died after 1013.

 Count of Mons in Hainnault Reinier
Count of Mons in Hainnault was born about 0995 in Hainult, Belgium.

 Beatrix de Hainault
Beatrix was born about 0997 in Hainault, Flanders, Belgium.  She died after 1035.