Complex sentence: He married Elizabeth, the daughter of Sir Francis Barrington of Hatfield Broad Oak, Essex, and the widow of Sir James Altham of Mark Hall, Latton, Essex The had 3 sons (of whom at least 1 predeceased him) and a daughter.
Split into simpler sentences: He married Elizabeth, the daughter of Sir Francis Barrington of Hatfield Broad Oak, Essex, and the widow of Sir James Altham of Mark Hall, Latton, Essex. They had 3 sons (of whom at least 1 predeceased him) and a daughter.