Biography
Longtime Keeper of Records at the Parliament House in Edinburgh. He was appointed on October 20, 1746, and continued to hold the office until February 1777, when he resigned on account of his age and infirmities.
Life with Boswell
Boswell took Dr Johnson to visit the Records Office at the Lower Parliament House in Edinburgh on August 16, 1773, and there had a discussion with Ker and others, recounted in Journal of a Tour to the Hebrides.