Berengar's kin became the first Gallo-speaking lords holding residence within Brittany (Rennes and Penthièvre, rather than the Loire Valley-predominant Nantes or Vannes), as a consequence of the Breton nobility being more or less broken under the Norman invasions of the 880s and as a reward for holding his ground against their attacks.
It has also been suggested that Henry had a son, named either Henry or, on the basis of onomastics, Berenger, who is to be identified with Berengar II of Neustria.
Neustria | Berengar II of Italy | Berengar of Berga | Berengar II of Neustria | Berengar |