Richard Butler, 1st Earl of Arran's first marriage was to ‘a lady of extraordinary quality ... that might have been made a wife for the King himself’.
She was Mary Stewart, suo jure Baroness Clifton of Leighton Bromswold, the daughter of of James Stewart, 1st Duke of Richmond, and heir to her brother, Esmé Stuart, 2nd Duke of Richmond, s.p. (he died in Paris in 1660, before the Restoration).
Mary and Richard were married on 13 Sept. 1664 (with £20,000).
She died 4 July, 1668
Chart showing the number of references in each month of the diary’s entries.