Too easy....King Frederick Richard Hollenzollern II of Prussia.
1712-to-1786

In his time he was known as Frederick the Great, for having won the Seven Years war 1756-to-1763 defeating Austria/Hungry, Russia, Sweden, and the Holy Roman Empire. But aside from the terror he struck in the European courts, he was one of the best writers of his age. Many of his works are of a political and military nature, but he contributed to philisophy, and art. Perhaps the most educated rule of his time.