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Anne of Brittany had several pregnancies during her marriage to Louis XII:

Claude of France b. 1499
Miscarriage b. 1500
Stillborn Son b. 1503
Miscarriage b. 1503
Miscarriage b. 1505
Miscarriage b. 1508
Miscarriage b. 1509
Renee of France b. 1510
Stillborn Son b. 1512

Let's say that the miscarriage in 1505 is a live-born son named Louis, giving Louis XII his long awaited heir. Giving Louis and Anne:
Claude of France b. 1499
Louis, Dauphin of France b. 1505 d. 1515
Renee of France b. 1510

Obviously this bumps Francis, Count of Angouleme down in the succession. Just for butterflies, Francis marries Suzanne de Bourbon in 1508.

Now across the channel, Elizabeth of York and Henry VII have:

Arthur, Prince of Wales b. 1486 d. 1502
Margaret, Queen of Scotland b. 1489
Henry VIII b. 1491
Elizabeth Tudor b. 1492
Mary Tudor b. 1496
Edmund, Duke of York (and Somerset?) b. 1499

I think you know where I'm going with this. Would it be plausible for Claude to marry Edmund, thus keeping Brittany independent from France?
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