Shamaya and Avtalyon were descended from Sancheriv. It says mibnei banav shel Haman lamdu Torah biVnei Brak.
Rav Yaakov Galinski shlit”a was having trouble getting his son into Ponovezh. So he called the Ponovezher Rav and said, “mibnei banav shel Haman lamdu Torah biVnei Brak, und far mein zun is nit duh kein platz?”
The Ponovezher Rav told him that, “Haman’s einiklach were politically connected, and they had better protektzia!”
(Heard from Rav Galinski himself while delivering a Purim Drasha)