Teaching one's descendants

The Shadow Clan a true demon clan that survived the ending of an age. They were a legendary Clan that lived and died in the shadows. Normal people don't even know of their existence but those in the know understand that their power and influence was able to rival a nation. Now the current Shadow Clan is nothing like its predecessor. It had weakened a considerable amount, but it was still considered a rather fearsome Clan. Most of the best assassins could trace their lineage back to this Clan. 

The current head of the Shadow Clan wasn't a direct descendant of the Shadow Clan Horned demons, instead, he was a descendant of a demon that was lucky enough to have learned their techniques, through a series of incidents. The name of the current head was Henry and though the blood of demons that flowed through his veins was so minuscule that you could say that he was fully human now, the current head still respected his ancestors.