Or, as we commoners ought to keep in mind, Elizabeth Cary, Viscountess Falkland. I suppose that if we were to address her we would need to use some honorific of the "your ladyship" sort. But that won't be necessary, as she died in 1639.
I only know of her because the June issue of Magnificat had a short article about her by John Janaro. You can read it, just slightly revised from Magnificat, here.
Elizabeth Cary was a remarkable woman in her own time. Indeed, among women or men of any period she would qualify as a genius. She was born about 1585 in Oxfordshire; in her desire to learn she outpaced her tutors almost from the beginning of her education, and she was fluent in multiple languages and widely read by the time of her marriage to Henry Cary, Viscount Falkland, in 1602.