 In 1306 Philip and Isabella were summoned to Charles II's court at Naples.Philip was accused of disloyalty and failure to support Charles in a campaign against Epirus, and Isabella of failing to seek her suzerain's consent before marrying Philip.Charles deprived the two of Achaea and on 5 May 1306 bestowed it directly upon his son Philip I of Taranto (who thus became Philip II of Achaea).