Descartes
You may be thinking of Rene Descartes who created the Cartesian plane,
Cullen
Pythagoras. He has the Pythagorean Theorem named after him.
It was invented by a mathematician named Pascal.
Niels AbelAryabhata
They are named after an English Mathematician and Physicist by the name of Newton.
Anders Celsius was a Swedish astronomer, physicist, and mathematician who lent his last name to the widely used Celsius temperature scale. There is also a crater on the moon named for him.
Its other name is the Cartesian plane and it was the French mathematician Rene Descartes who first conceived of the idea of x and y axes on the coordinate plane
The true name was Rene Descartes with an acute accent over the last letter of his first name. I expect this browser to mess that up!
Rene Descartes had a daughter named Francine Descartes, who tragically died as an infant at just five years old.
Turing
This unit of pressure/stress was named after French mathematician/physicist Blaise Pascal.