Complex sentence: Ferguson was the son of Captain R.W. Ferguson and Mrs. Ferguson and he married twice, to Laura Magill Ferguson who died in 1913 and remarried Sarah Maddocks Ferguson (1889-1973).
Split into simpler sentences: Ferguson was the son of Captain R.W. Ferguson and he married Laura Magill Ferguson who died in 1913. He remarried, to Sarah Maddocks Ferguson (1889-1973).