Vampire Patriarch is a very strong Vampire in Oblivion. There are eleven of them and they are the "fathers" of a band of vampires, similar to a Marauder Warlord.
Having a high position, they are very well equipped with the highest quality armor, light or heavy and weapons of their level. Use caution when approaching, as they defend themselves well, and attack viciously. Like all vampires, they have a weakness to fire.