Erard I, Count of Brienne
In 1097 he fought in the First Crusade.
In 1110 he married Alix of Roucy-Ramerupt, daughter of André de Montdidier-Roucy, seigneur de Ramerupt. They had 3 children :
- Gautier II of Brienne, count of Brienne and lord of Ramerupt.
- Guy of Brienne
- Félicité of Brienne, who married Simon I of Broyes then in 1142 Geoffroy III, sire de Joinville.