Complex sentence: At the Hôpital Saint-Louis he was a colleague of Auguste Nélaton (1807-1873), and was father-in-law to surgeon Léon Clement Le Fort (1829-1893).
Split into simpler sentences: At the Hôpital Saint-Louis he was a colleague of Auguste Nélaton (1807-1873). Malgaigne was father-in-law to surgeon Léon Clement Le Fort (1829-1893).