Complex sentence: He was divorced in 1909 and in 1910 married Muriel Carmel, (the daughter of Albert Goldsmid), by whom he had two sons, David (who was killed in the Spanish Civil War) and Peter and a daughter, Angela.
Split into simpler sentences: He was divorced in 1909 and in 1910 he married Muriel Carmel, the daughter of Albert Goldsmid. They had two sons, David who was killed in the Spanish Civil War, Peter, and a daughter, Angela.