Berengar I of Neustria was Marquis of Neustria, relative of Adalard the Seneschal and Udo of Neustria, Girardids close to the Conradines and probably father of Berengar II of Neustria.
Berengar I of Neustria was Marquis of Neustria, one of the Conradines along with Udo of Neustria to be cousins of Adalard the Seneschal, a Girardid. Berengar was probably father of Berengar II of Neustria.