Hi /his/, I am looking for remarkable, yet relatively unknown

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Hi /his/, I am looking for remarkable, yet relatively unknown people in history, especially persons who’s performed deeds that “stick out” in a way.
It’s a bit hard to explain so I’ll try with some examples:
Gabrielle D’annunzio, italien poet, writer, womanizer and war hero. Invaded the city of Fiume and tried to give it back to Italy after the Paris peace after WW1. When Italy didn’t want it, he declared it an independent state and had weekly readings of his own poetry in the town square. Spent the last 17 years of his life building a monument in honor of himself.
Or Diocletian, one of the few roman emperors who successfully retired, who, after the empire had gone downhill after his retirement, refused to come back as he was busy with his hobby: cabbage farming
(I know both are a bit more complex in actual history, but I shortened them down)
SO, /his/ got any cool stories?
Hard mode: Cool shit done by a woman – searching for “badass/cool/whatever woman in history” gives you women who’s done what a man has already done, only remarkable because it was done in a male-dominated world, i.e opened a university or flew over the atlantic ocean