Nowhere was William's role as a conduit between Gallic and Danish society more apparent, however, than in the "Ingeborg Affair." Working apparently on behalf of King Knud VI of Denmark, and Absalon, William intervened in the case of Philip Augustus of France who was attempting to repudiate his wife Ingeborg (1175–1236), daughter of Valdemar I of Denmark. It was on this occasion that he composed a genealogy of the Danish kings, intended to disprove the alleged impediment of consanguinity between Ingeborg and Philip.