Complex sentence: Cabell was born into an affluent and well-connected Virginian family--his father Robert Gamble Cabell II (1847-1922) was a physician, and his mother Anne Harris (1859-1915) was the daughter of Col. and Mrs James R. Branch.
Split into simpler sentences: Cabell was born into an affluent and well-connected Virginian family--his father Robert Gamble Cabell II (1847-1922) was a physician. His mother Anne Harris (1859-1915) was the daughter of Col. and Mrs James R. Branch.