1911 Encyclopædia Britannica, Volume 12… (1911)
“ William, the 9th earl (c. 1610–1664) , a somewhat lukewarm Royalist during the Civil War, was a party to the “engagement” between the king and the Scots in 1647; for this proceeding the Scottish parliament deprived him of his office as lord justice-general, and nominally of his earldom. In March 1653 Charles II. commissioned the earl to command the Royalist forces in Scotland, pending the arrival of General John Middleton, and the insurrection of this year is generally known as Glencairn’s rising. ”
