History of England
With Henry VII's accession to the throne in 1485, the Wars of the Roses came to an end, and Tudors would continue to rule England for 118 years. Traditionally, the Battle of Bosworth Field is considered to mark the end of the Middle Ages in England, although Henry did not introduce any new concept of monarchy, and for most of his reign his hold on power was tenuous. He claimed the throne by conquest and God's judgement in battle. Parliament quickly recognized him as king, but the Yorkists were far from defeated. Nonetheless, he married Edward IV's eldest daughter Elizabeth in January 1486, thereby uniting the houses of York and Lancaster.
Wales in the Late Middle Ages
In the Wars of the Roses over the English throne, which began in 1455, both sides made considerable use of Welsh troops. The main figures in Wales were the two Earls of Pembroke, the Yorkist Earl William Herbert and the Lancastrian Jasper Tudor. In 1485 Jasper's nephew, Henry Tudor, landed in Wales with a small force to launch his bid for the throne of England. Henry was of Welsh descent, counting princes such as Rhys ap Gruffydd (The Lord Rhys) among his ancestors, and his cause gained much support in Wales. Henry defeated King Richard III of England at the Battle of Bosworth with an army containing many Welsh soldiers and gained the throne as King Henry VII of England.