Complex sentence: Gen. Robert Young (1768-1824) and Elizabeth Mary Conrad (1772-1810) and was the sister of Roberta Eugenia Young (1813-1886), who married Gov. Albert Gallatin Brown (1813-1880), Governor of Mississippi.
Split into simpler sentences: Gen. Robert Young (1768-1824) and Elizabeth Mary Conrad (1772-1810). Elizabeth was the sister of Roberta Eugenia Young (1813-1886), who married Gov. Albert Gallatin Brown (1813-1880), Governor of Mississippi.