Roger Grierson, 8th of Lag Peerage person ID=23491 (1529–1593) Parents Sir John Grierson, 6th of Lag Egidia Gelis Kennedy Children Sir William Grierson, 9th of Lag Agnes Grierson unknown daughter Grierson Susanna Grierson Grisel Grierson Siblings Elizabeth Grierson Janet Grierson Nicola Grierson Sir Thomas Grierson John Grierson William Grierson, 7th of Lag Robert Grierson Agnes Grierson Partners Helen Douglas Margaret Chalmers