Kaen Tan was an old Caraadian noble and the man who united the Par'tha Expanse. In a twenty year civil war, Tan, the lord of House Tadere, waged a war against the other noble Houses, which were then independent kingdoms. He finally triumphed over the rogue Houses when he completely eliminated two rival houses and caused another to collapse on itself. No longer opposed, Tan crowned himself Emperor of the Tanith Sector (as it was then called). Details of his reign are unknown, but House Tadere ruled the Tanith Empire (Par'tha Expanse) for sixteen generations, before the dynasty was overthrown.