Found inEurop. Stammtaf., N.F., Bd. 2. — Wikipedia: https://de.wikipedia.org/wiki/Marie_de_Guise
Portrait of Mary of Guise (1515 - 1560), Queen of James V of Scotland and mother of Mary, Queen of Scots [Corneille de Lyon / National Galleries of Scotland -- Public domain -- http://commons.wikimedia.org/wiki/File:Maryofguise1.jpg]