About Margaret Montgomerie (Leslie)
“III. Margaret, third Countess of Leven, in terms of the entail, dated 13th February 1633. A royal charter, proceeding on the entail and resignation made by Alexander, second Earl of Leven, was granted 7th September 1665. This charter bears that the king was willing that the Countess Margaret, notwithstanding that her father, Alexander, second Earl of Leven, died before a charter and precept could be obtained, on his resignation of the honours and estates of Leven in favour of the heirs mentioned in the deed of entail, should yet inherit the honours and estates. This charter, given at Edinburgh, did not proceed upon the sign-manual, and is not warranted by the king. It was passed only in common form, by the Treasurer and Barons of the Exchequer, upon a simple escheat, without the doquet of the Secretary of State countersigned by him, and the superscription of the King.
“Margaret, third Countess of Leven, married, in 1674, the Honourable Francis Montgomery of Giffen, second son of Hugh, seventh Earl of Eglinton, but died the same year in minority, without issue. She was succeeded by her sister."