Xavier Marcel Boulestin was a French chef, restaurateur, and the author of cookery books that popularised French cuisine in the English-speaking world. Born in Poitiers in France, Boulestin tried a number of occupations before finding his role as a restaurateur. He worked as secretary and ghostwriter to the author "Willy" in Paris, and then moved to London, where he made his home and career from 1906 onward. There, he opened an interior design shop, which failed to make enough money. He wrote extensively, and was commissioned to write a simple French cookery book for English readers. It was a huge success, and thereafter his career was in cooking. The Restaurant Boulestin, known as the most expensive in London, opened in 1927. Its fame, and the long series of books and articles that Boulestin wrote, made him a celebrity. His cuisine was wide-ranging, embracing not only the French classics but also dishes familiar to British cooks. Among those influenced by Boulestin was the English cookery expert Elizabeth David, who praised Boulestin in her writings, and adopted many of his precepts.

https://en.wikipedia.org/wiki/Marcel_Boulestin