Complex sentence: Several other members of McCulloch's family followed him to Texas, including his mother, who died in Ellis County in 1866 at the home of another son, John C. McCulloch, who had been a captain in the Confederate army.
Split into simpler sentences: Several other members of McCulloch's family followed him to Texas, including his mother. She died in Ellis County in 1866 at the home of another of her sons, John C. McCulloch, who had been a captain in the Confederate army.