Édouard Roche was a 19th century French mathematician and astronomer who worked for his whole career at the University of Montpellier. He is famed for what are known today as the Roche lobes, equipotential surfaces, and the Roche limit giving the distance from a planet at which satellites will be torn into rings.
Find out more at: https://mathshistory.st-andrews.ac.uk/Biographies/Roche/