@PuRe DaRkNeSsOldblood is a name given to incredibly old and powerful vampires. Beings of at least a thousand years old earn this title. Only the strongest of vampires can live this long, and their age only enhances their strength. In general, Oldbloods are the most powerful and rare of vampires. They're also known as Vampire Lords.
Newbloods or sirelings are newly created vampires. They're often weak, and don't fully control their powers. More powerful vampires often use Newbloods as meat shields, until the more powerful ones earn their claws.
Sire Kings are Oldbloods who have started an entire lineage. Very few vampires have gained this title. Examples are Dracula, Gabriel, the Pale Lady, and Tutankhamen. Even among Oldbloods they are feared, both for their strength and political power. They often exert direct control over their descendents, giving them access to entire armies.
these are the terms used in Blood Compact to describe certain types of vampires.