In order to secure his grasp on the throne , Diomedes married Aegialeus ' daughter , Princess Aegialia .
That being so , upon returning home to Argos , Diomedes ascended to the throne .
In order to secure Diomedes ' grasp on the throne , Diomedes married Aegialeus ' daughter , Princess Aegialia .
That being so , upon returning home to Argos , Diomedes ascended to the throne .