Talk:Winchester Family

Bloodlines
If the bloodline stretched back to Cain and Abel, shouldn't there be a lot (millions, perhaps) of families that also descend from them (assuming the show follows biblical genealogy and propagation of humanity)?

Any possible in-canon explanations you could think of (i.e., angels arranging the bloodline's survival only through one family at a time, choosing the best descendant and killing off inferior branches)?