Margaret Douglas

It has been implied that Margaret would be daughter of William Douglas 1st Earl of Douglas, but no serious web sites (stirnet, fmg.ac) support this assumption, and note the parents as unknown.

https://books.google.com/books?id=YyJNAQAAMAAJ&pg=PA808&lpg=PA808&d...

Margaret Douglas married Herbert Herries

http://www.palmspringsbum.com/genealogy/getperson.php?personID=I107...

Margaret Douglas married Herbert Herries

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http://www.tim.ukpub.net/pl_tree/ps38/ps38_002.html

Herbert Herries wife may have been Margaret

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There are no valid sources for the marriage of Elizabeth to Herbert.