Ananke bloodline (possibly)
There are many tales about the being known as Ankou. It is an ancient terror that stalks the night and appears in Malkavians' dreams as a remorseless, lifeless monster that silently treads country roads with an ox-cart and scythe. If rumors can be trusted, it was birthed in the days when agriculture was a budding art, and was perhaps even slain and Embraced as a sacrifice to an earth-goddess. However, its duty to the earth did not end with death.
A few have said that Ankou is the first of the serial killers, or possibly their patron saint. Many believe it to be a methuselah, grandchilde of Malkav and faithful servant of his sire. Its power is so great that it can walk unscathed through Garou territory or even vanish from one place and appear miles away. Vampires, especially Malkavians, are known to disappear from their hunting grounds without a trace.
Malkavians vanish from their hunting grounds all the time, but sometimes after a disappearance, the Madness Network vibrates with whispers repeating "Ankou". Members of the clan who know of the Ankou treat its legends with reverence and loathing.
Ankou is the personification of death in Breton mythology as well as in Cornish and Norman French folklore.