Mauger, Count of Corbeil, in right of his wife; married Germaine, daughter and heir of Albert, Count of Corbeil, and had [Hamon, Count of Corbeil], with an elder son (William, dsp a monk in the Abbey of St. Maur). [Burke's Peerage]
Note the above puts the descendancy through William in doubt. Of course being an elder son, he could have been Count at least for a while, and maybe had illegitimate children. Though they would not be Counts.
Mauger, Count of Corbeil, in right of his wife; married Germaine, daughter and heir of Albert, Count of Corbeil, and had [Hamon, Count of Corbeil], with an elder son (William, dsp a monk in the Abbey of St. Maur). [Burke's Peerage]
Note the above puts the descendancy through William in doubt. Of course being an elder son, he could have been Count at least for a while, and maybe had illegitimate children. Though they would not be Counts.