I feel like I have to channel my old math teacher.
It was Euler.
He also lived without electricity, and went blind too. And yet he figured out a huge amount of interesting stuff, roughly corresponding with high school math. Euler also moved across countries.
The saying we had in my uni is that most math discoveries are named after the second person to publish them, because we can’t name everything after Euler.
Math-wise Euler was more about establishing standard approaches than anything else. In addition to that, his contributions to graph theory and topology were substantial if not defining.
His contributions in physics were truly groundbreaking, a lot of traditional theoretical mechanics is coming from him mostly.
And not even all of his works in Latin were translated yet...
It was Euler.
He also lived without electricity, and went blind too. And yet he figured out a huge amount of interesting stuff, roughly corresponding with high school math. Euler also moved across countries.