For the earls of Cassilis, and passed into the hands of the Stair family in the 17th century.
For once true to their country, they helped Buccleuch to defeat a large English force at Ancram Moor in February 1545, and Henry, seeking help from Cassilis, revived the plot to murder Beaton.
Cassilis was a Protestant and the patron of Knox's friend and teacher, George Wishart; Cassilis would not commit himself formally, and the threads of the plot are lost, owing to a great gap in the records.
As the year passed by, Argyll, Cassilis, Eglintoun and Boyd went over to Lennox's party, and in an otherwise futile raid of Kirkcaldy's men on Stirling, Lennox was captured and was shot by a man named Calder.
The preachers, with Lords Loudoun and Eglintoun, Argyll and Cassilis, armed and raised the godly, and occupied Edinburgh.