Lady Marina Windsor Lady Marina Windsor, 33, is the eldest daughter of the Earl and Countess of St Andrews; the younger sister of Edward Windsor, Lord Downpatrick, and the older sister of Lady Amelia Windsor. Marina attended St Mary's Ascot school where she was Deputy Head Girl before going on to study French and Portuguese at the University of Edinburgh, where she starred in a number of plays and wrote for student-based Y-Magazine on ‘interesting causes around the world’.