"Joachim Frederick (German: Joachim Friedrich) (27 January 1546 – 18 July 1608), of the House of Hohenzollern, was Prince-elector of the Margraviate of Brandenburg from 1598 until his death." - (en.wikipedia.org 29.10.2019)
en
(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)