Complex sentence: She married a Thomas York by whom she had children, but they all lived in obscurity, as did Anne, who following Queen Elizabeth I's accession to the throne, retired to Benington, in Hertfordshire, where she lived out the rest of her life.
Split into simpler sentences: She married a Thomas York by whom she had children, but they all lived in obscurity. Emerson Following Queen Elizabeth I's accession to the throne, Anne retired to Benington, in Hertfordshire, where she lived out the rest of her life.