Complex sentence: Princess Elizabeth of Hesse and by Rhine (later Grand Duchess Elizabeth Feodorovna of Russia), may or may not have been a carrier; she was childless when killed by the Bolsheviks in 1918.
Split into simpler sentences: Princess Elizabeth of Hesse and by Rhine (later Grand Duchess Elizabeth Feodorovna of Russia), may or may not have been a carrier. She was childless when killed by the Bolsheviks in 1918.