Complex sentence: Born Jean-Pierre Grumbach, he later adopted the pseudonym Melville during World War II as a tribute to his favorite American author, Herman Melville, Breitbart, 180 and subsequently kept it as his stage name once the war was over.
Split into simpler sentences: Born Jean-Pierre Grumbach, he later adopted the pseudonym Melville during World War II as a tribute to his favorite American author, Herman Melville. Breitbart 180 and subsequently kept it as his stage name once the war was over.