Complex sentence: Also at this time, Pujol's first wife Matilde Cuervas died (1956) and seven years later he married Maria Adelaide Robert, a noted Portuguese pianist and singer who greatly assisted him in his final years.
Split into simpler sentences: Also at this time, Pujol's first wife Matilde Cuervas died (1956). Seven years later he married Maria Adelaide Robert, a noted Portuguese pianist and singer who greatly assisted him in his final years.