Philo Judaeus Legatio Ad Gaium 71

[71] And in reference to Silanus they said, "Silanus was a most ridiculous person when he took it into his head that a father-in-law would have as much influence with his son-in-law as a real father has with a son. And yet even real fathers who are in a private station submit to their sons when they are in great offices and in places of high authority, being quite content with the second place; but this foolish man, even when he was no longer his father-in-law, kept on claiming privileges which did not belong to him, without perceiving that with the death of his daughter the connexion which had originated in the marriage of Caius with her had also died,