Peerage of Scotland, Edition: 2nd ed. @ Vol I, p 262, eldest dau of Alan Lord of Galloway, no mother
The cited information was published by Edinburgh, reprinted by Oldbuck Press, (orig) Edinburgh,
(reprint) Conway, AR, 1813, reprinted 1993 (Ref: Vol I, p 262, eldest dau of Alan Lord of Galloway, no mother) The author/originator was Sir Robert Douglas, 2nd ed. rev. by John Philip Wood.