If anyone's interested, here's a 'counterfactual' thread, like the one on the Tudor board.
One of the things I was thinking of is what might have happened to these various Stuarts who died young, if they had survived, or at least one of them had:
-Children of James VI/I
*Margaret Stuart 1598-1600
*Robert Bruce Stuart, Duke of Kintyre 1602
*Mary Stuart 1605-1607
*Sophia Stuart 1606
Who might the girls have married? Would Robert have been a close councilor/general for Charles I in the Civil War? Would the Cromwellians have executed him too?
-Children of Charles I
*Elizabeth Stuart 1635-1650
*Anne Stuart 1637-1640
*Catherine Stuart 1639
*Henry Stuart, Duke of Gloucester 1640-1660
The girls would have been 25, 23 and 21 at the time of the Restoration. Would they have been married by then? In all likelihood, Anne and Catherine would have been kept in England with Elizabeth and Henry. And what of Henry? Would he have been considered an alternative king to James II (instead of Monmouth)?
-Children of James II and Anne Hyde
*Charles Stuart, Duke of Cambridge 1660-1661
*James Stuart, Duke of Cambridge 1663-1667
*Charles Stuart, Duke of Kendal 1666-1667
*Edgar Stuart, Duke of Cambridge 1667-1671
*Henrietta Stuart 1669
*Catherine Stuart 1671
If the eldest, Charles, had survived, he obviously would have been heir presumptive to the throne. However, since the legality (and indeed existence) of his father's 1659 marriage to Anne Hyde was in doubt, his legitimacy could always be questioned. No doubt Charles II would have had the other children - especially boys like James and Edgar - brought up as Protestants. Charles might have allowed James to bring up the girls as Catholics, since they wouldn't have a good chance to succeed the throne, and since it would give them a better chance of a good marriage.
-Children of James II and Mary of Modena
*Catherine Laura Stuart 1675
*Isabella Stuart 1676-1681
*Charles Stuart, Duke of Cambridge 1677
*Elizabeth Stuart 1678
*Charlotte Maria Stuart 1682
*Louise Marie Stuart 1692-1712
We speculated on Louise Marie's fate on another thread - might she have entered a convent, or maybe even married a Conti or Conde? Does anyone know if Isabella, the only one who lived to be a toddler (apart from Louise Marie) was intended to be a Catholic or a Protestant? If Charles, Duke of Cambridge (1677) had survived, wouldn't Charles II have had him made a Protestant? And who might the girls have married?
I know not everyone shares my passion for 'What if's but I'd love to hear your thoughts!