Complex sentence: Oswald married twice, firstly to Jean Moir-Byres with whom he had a daughter, Jean died in 1907 and Oswald married again in 1908 to Ethel Mary Cundell He died in 1940 in the Salisbury district of Wiltshire.
Split into simpler sentences: Oswald married twice, firstly to Jean Moir-Byres with whom he had a daughter. Oswald died in 1940 in the Salisbury district of Wiltshire.