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The duchesse de Bourgogne had seven pregnancies looking like this:

Miscarried Daughter (1702)
Stillborn Son (1703)
Louis, duc de Bretagne (1704-1705)
Louis, dauphin de Viennois (1707-1712)
Miscarried Child (possibly a daughter) (1708)
Louis XV (1710-1774)
Stillborn Daughter (1711)

What if these pregnancies had carried to term, or the child survived? Would the daughters take the place of the Regent's own (lets assume Fargon still "kills" the duc and duchesse on schedule in 1712)? Or might grander matches b found for them? Does this rid us of the French involvement in the War of the Quadruple Alliance? With a bevy of brothers and sisters, does Louis XV (whomever it is) grow up with less issues resulting from a lack of an immediate family in his formative years?
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