Complex sentence: Jane Wharton, de jure 7th Baroness Wharton (1706--1761) was the daughter of Thomas Wharton, 1st Marquess of Wharton by his second wife Lucy Loftus, and sister of Philip Wharton, 1st Duke of Wharton.
Split into simpler sentences: Jane Wharton, de jure 7th Baroness Wharton (1706--1761). Daughter of Thomas Wharton, 1st Marquess of Wharton and sister of Philip Wharton, 1st Duke of Wharton.