As a young French Marquis, I met Jean Bernoulli, a mathematician who introduced me to Leibnitz's philosophy and mathematics.
I signed a special pact with Bernoulli...I would send him a regular salary and he would send me his mathematical discoveries to "use as I wish."
Because of this unusual agreement, my name is attached to an evaluation technique for indeterminate forms (usually found in calculus texts), yet it was Bernoulli's idea.
I wrote the first published textbook on differentiable calculus...and it dominated the field for most of the 18th century.
Though I openly credited Bernoulli for his mathematical contributions and discoveries in my text, he later accused me of plagiarism.
Gullaume F. A. de L'Hopital (1661-1704)