1911 Encyclopædia Britannica, Volume 16… (1911)
“ The Lennox dukedom, being to heirs male, now devolved upon Charles II., who bestowed it with the titles of earl of Darnley and Lord Tarbolton upon one of his bastards, Charles Lennox, son of the celebrated duchess of Portsmouth, he having previously been created duke of Richmond, earl of March and Lord Settrington in the peerage of England. The ancient lands of the Lennox title were also granted to him, but these he sold to the duke of Montrose. ”
