Complex sentence: Storer was a native of Boston, Massachusetts and the grandson of Dr. Horatio Robinson Storer (1830-1922), a Boston gynecologist and is the son of John Humphreys Storer (b.1859) and Edith Paine, daughter of Robert Treat Paine.
Split into simpler sentences: Storer was a native of Boston, Massachusetts, and the grandson of Dr. Horatio Robinson Storer (1830-1922), a Boston gynecologist. He was the son of John Humphreys Storer (b.1859) and Edith Paine, daughter of Robert Treat Paine.