William Cochrane, 1st Earl of Dundonald (1605– November 1685)[1] supported the Royalist cause during the Wars of the Three Kingdoms.
[2] William Cochrane of Coldoun, who was knighted by Charles I, acquired the estate of Dundonald in 1638.
[1] The part he had taken in the Wars of the Three Kingdoms, is evidenced by the proceedings of the Presbytery of Ayr, which, on 28 February 1649, debarred "Lord Cochrane" from renewing the Solemn League and Covenant, he having "been a Colonel in the late unlawful rebellion, and having went to Ireland to bring over forces," etc.
In 1669,[1] he was made a Commissioner of the Treasury and Exchequer, and created Baron Cochrane, of Paisley and Ochiltree (having previously acquired the latter barony), and Earl of Dundonald, with remainder to the heirs-male of his body, failing which, to tho eldest heirs-female of his body without division, and the heirs-male of such heirs-female, bearing the name and arms of Cochrane.
[2] In 1684 the Earl was accused, in his old age, of having kept a chaplain with his dying son, who prayed for the success of these rebels in the west—those Covenanters who defeated Claverhouse at the Battle of Drumclog in 1679.