Complex sentence: Stewart's daughter Jean Stewart (1914-2002) was a noted concert performer on viola, who played with the Menges Quartet, the London Bach Orchestra and the English Baroque Soloists.
Split into simpler sentences: Stewart's daughter Jean Stewart (1914-2002) was a noted concert performer on viola, performing as a soloist, and in chamber music and orchestras. She performed with the Menges Quartet, the London Bach Orchestra and the English Baroque Soloists.