Whats the difference between a clan and a bloodline?
Mainly semantics, with a good dose of pragmatism mixed in for good measure. A clan, by the most rigid definition, is a lineage of vampires sharing common descent from a single, extant Antediluvian. The Salubri, whom The Book of Nod describes as having a third-generation founder, are no longer a clan, while the Giovanni, whose Antediluvian sometimes takes an active part in the affairs of the family, are now a clan.