Battle of Bosworth Field There are hopes that public access to the site may be possible in the future. Books Periodicals Online sources Battle of Bosworth Field The Battle of Bosworth Field (or Battle of Bosworth) was the last significant battle of the Wars of the Roses, the civil war between the Houses of Lancaster and York that extended across England in the latter half of the 15th century. Fought on 22 August 1485, the battle was won by the Lancastrians. Their leader Henry Tudor, Earl of Richmond, by his victory became the first English monarch of the Tudor dynasty. His opponent, Richard III,
William Stanley (Battle of Bosworth) by the king. In 1483 he was made Chief Justice of North Wales. Richard III, shortly after becoming king, rewarded Sir William by granting him land in North Wales. Having been loyal to Richard, Stanley nevertheless changed sides in 1485, and suddenly supported the Lancastrian Henry Tudor's bid for the throne. Stanley is best known for his action at the Battle of Bosworth, where he decisively attacked the Yorkists under Richard, helping to secure Henry VII's victory. This was in contrast to the non-committal attitude of his elder brother, Henry's stepfather, who was inhibited by the fact that Richard held