User blog comment:Garr9988/Episode Ideas/@comment-24588058-20170403155422/@comment-25175617-20170403175321

Well we do know of one leader who had control of the warehouse. Ghengis Khan created the Remati shackle to protect WH7, implying he had some level of control over it.

WH3/Rome also had a lot of military turmoil over a long reign, so it is definitely possible for some of the Emperors to be keen to sieze the WH.

Otherwise, WH4 would definitely be a good candidate.