[1] On 19 April 1567, Ross was one of the 22 lords who signed the Ainslie Tavern Bond to indicate their agreement to the marriage between Bothwell and the Queen.
He took part in the Battle of Langside on 13 May 1568, but was captured by the Regent Moray.
Ten years later, in 1578, he appeared in a list of nobles still adhering to the Queen.
[1] As a Roman Catholic, he was excommunicated on 20 June 1573, alongside his brother-in-law, Lord Sempill.
Ross married Jean, daughter of Robert Sempill, 3rd Lord Sempill (a descendant of Robert II of Scotland, Robert III of Scotland)[3] and also Sir John Ross, 1st Lord of Ross of Halkhead [4]) who died 28 February 1593.