Ok, I'm just gonna throw this out here...POD is the survival of Henry Frederick Stuart.
HOUSE OF STUART
James I/VI Stuart, King of England, Scotland, and Ireland (b. 1566, d. 1625) m. Anne of Denmark (b. 1574, d. 1619) in 1589, had issue
1) Henry IX Frederick Stuart, King of England, Scotland, and Ireland (b. 1594, d. ?) m. Elisabeth of Hesse-Kassel (b. 1595, d. 1647) in 1614, had issue
2) Elizabeth Stuart, Queen of Bohemia (b. 1596, d. 1662) m. Frederick V, Elector Palatine (b. ?) in 1613, had issue
3) Margaret Stuart (b. 1598, d. 1600)
4) Charles Stuart, Duke of York and Albany (b. 1600, d. ?) m. Charlotte de La Tremoille (b. 1599, d. ?) in 1525, had issue
5) Robert Stuart, Duke of Kintyre (b. and d. 1602)
6) Mary Stuart (b. 1605, d. 1607)
7) Sophia Stuart (b. and d. 1606)