Douglas Harper: morganatic (adj.). Auf: etymonline.com. Ohne Datum, abgerufen am 25. September 2018 (englisch, mit Bezug auf Deutschland); Zitat: „1727, from French morganatique (18c.), from Medieval Latin matrimonium ad morganaticam »marriage of the morning«, probably from Old High German *morgangeba (Middle High German morgengabe) »morning gift« […] Also known as left-handed marriage, because the groom gives the bride his left hand instead of his right, but sometimes this latter term is used of a class of marriage (especially in Germany) where the spouse of inferior rank is not elevated, but the children inherit rights of succession.“