Teejay
Gone Fishin'
The POD is that instead of Richard III being killed at Bosworth field, Henry Tudor (OTL Henry VII) is killed instead. Because in OTL according to descriptions of the battle, this almost occurred to Henry.
As I see the rest of Richard III's reign is going to as secure (or even more so) than Henry VII's was. In that he is not likely to face rebellion after rebellion which occurred in the reign of Henry VII.
Since the type of people who supported especially the Simnel and Perbeck rebellions in OTL would be supporting Richard III. Also after the death of Henry Tudor the Lancastarian cause is extinguished.
In this timeline the dual marriages of Richard III and Joanna, Princess of Portgual, along with Elizabeth of York and the Duke of Beja (future King Manuel I) would go ahead. Given that Joanna died in 1490 in OTL, Richard will be looking for another wife. The other daughters of Edward IV get married off to various supporters of Richard.
As I see the rest of Richard III's reign is going to as secure (or even more so) than Henry VII's was. In that he is not likely to face rebellion after rebellion which occurred in the reign of Henry VII.
Since the type of people who supported especially the Simnel and Perbeck rebellions in OTL would be supporting Richard III. Also after the death of Henry Tudor the Lancastarian cause is extinguished.
In this timeline the dual marriages of Richard III and Joanna, Princess of Portgual, along with Elizabeth of York and the Duke of Beja (future King Manuel I) would go ahead. Given that Joanna died in 1490 in OTL, Richard will be looking for another wife. The other daughters of Edward IV get married off to various supporters of Richard.