William was perhaps countering the growing strength of the Counts of La Marche in northern Aquitaine since their family succeeded to the County of Périgord, previously dominated by Angoulême, in 975.
Guillaume itu mungkin melawan kekuatan tumbuh dari para Comte La Marche di Aquitaine utara karena keluarga mereka mewarisi County Périgord, sebelumnya didominasi oleh Angoulême, pada tahun 975.