Henry Tudor, who later became King Henry VII of England, was exiled primarily due to the political turmoil and power struggles during the Wars of the Roses. This series of civil wars was fought between the houses of Lancaster and York for control of the English throne.
Henry Tudor was a Lancastrian claimant to the throne. After the Yorkist victory at the Battle of Tewkesbury in 1471, many Lancastrian leaders were killed, and Henry’s claim became even more precarious. His uncle, Jasper Tudor, took him to Brittany for safety. This exile lasted for 14 years, during which Henry grew up and gathered support for his eventual return to England.
In 1485, Henry returned to England and defeated Richard III at the Battle of Bosworth Field, effectively ending the Wars of the Roses and establishing the Tudor dynasty.