Michal Kazimierz Oginski, born in 1730, was a Polish noble, once in consideration for the Polish-Lithuanian throne. He was heavily involved in the military and politics, battling (and losing to) Russian forces.
He was a great supportor of the arts, and was a patron to many artists. He employed an orchestra in his court, as well as theatre groups. His interest in music wasn’t limited to other musicians: he modified the harp, and was also an accomplished musician and composer.