Battle of Stoke Field
The Battle of Stoke Field on 16 June 1487 may be considered the last battle of the Wars of the Roses, since it was the last major engagement between contenders for the throne whose claims derived from descent from the houses of Lancaster and York respectively. The Battle of Bosworth, two years previously, had established King Henry VII on the throne, ending the last period of Yorkist rule and initiating that of the Tudors. The Battle of Stoke Field was the decisive engagement in an attempt by leading Yorkists to unseat him in favour of the pretender Lambert Simnel.
Though it is often portrayed as almost a footnote to the major battles between York and Lancaster, it may have been slightly larger than Bosworth, with much heavier casualties, possibly because of the terrain which forced the two sides into close, attritional combat. In the end, though, Henry's victory was crushing. Almost all the leading Yorkists were killed in the battle.
The pretender
Henry VII of England held the throne for the House of Lancaster (House of Tudor), and had tried to gain the acceptance of the Yorkist faction by his marriage to their heiress, Elizabeth of York, but his hold on power was not entirely secure.