Complex sentence: Carlotta Monti (20 January1907-8 December1993), born Carlotta Montijo, was a minor Hollywood actress who became W. C. Fields' mistress-they were together for over fifteen years, and she was by his bedside when he died in 1946.
Split into simpler sentences: Carlotta Monti (20 January1907-8 December1993), born Carlotta Montijo, was a minor Hollywood actress who became W. C. Fields' mistress. They were together for over fifteen years, and she was by his bedside when he died in 1946.