Josef Hoëné-Wronski (1776—1853) was born Josef Hoëné in Poland, but after adopting French nationality and settling in Paris, he changed his name to Wronski. He was a philosopher and mathematician whose ideas were seen as useless and utopian, although more recent research has suggested that he in fact had great mathematical perception and even some genius.
His second wife was Simone de Caillevet, who was the granddaughter of Léontine Arman de Caillavet, the mistress of Anatole France. And Anatole France is buried here, although I couldn't find him. At the cemetery reception his location was found (with some difficulty), and the clerk mentioned that he had seen his grave, although the details I was given didn't seem to meet with anything that even vaguely resembled the reality. I gave up — it had already been a long day.