Qui est sorti avec Rorgon I, Count of Maine?

Rorgon I or Rorico(n) I (also Rorgo or Rorich; died 16 June 839 or 840) was the first count of Maine and progenitor of the Rorgonid dynasty, which is named for him. He was count of Rennes from 819 and of Maine from 832 until his death.