Sir Richard Cockburn, of Clerkington, Lord Privy Seal

Extract from The House of Cockburn of that Ilk, and their cadets. by Thomas H. Cockburn-Hood (Edinburgh 1888) pages 83 (http://archive.org/details/houseofcockburno00cock)

Margaret Cockburn, daughter of this Baron, and Janet his wife [who thus appear to have died in the prime of life in the same month, perishing together possibly crossing the flooded Whitadder, or by some other fatality], married her kinsman Sir Richard Cockburn of Clerkington, at one time Secretary of State for Scotland, and afterwards Lord Privy Seal. The bond thus renewed between this influential branch and the main stem of Langton had always been a very close one.