http://en.wikipedia.org/wiki/List_of_coupled_cousins#Royalty
Fulk DID NOT marry Henry IV!
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+Eleanor of A overlaps with John?
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+Lots of people are lacking in styles.
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+Edward son of Mary de Bohun and Henry IV - fix wikipedia! update database,
+check other wives for offspring unlisted on husband's pages
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+Fix king of Franks/France with actual title!