Battle of Bosworth Field to establish his reign, underscoring his point by noting that the young king had to spend ten more years pacifying factions and rebellions to secure his throne. Mackie asserts that, in hindsight, Bosworth Field is notable as the decisive battle that established a dynasty which would rule unchallenged over England for more than a hundred years. Mackie notes that contemporary historians of that time, wary of the three royal successions during the long Wars of the Roses, considered Bosworth Field just another in a lengthy series of such battles. It was through the works and efforts of Francis Bacon and
Battle of Bosworth Field Yorkist chronicler who relied on second-hand information from nobles and soldiers. The other accounts were written by foreigners—Vergil, Jean Molinet, and Diego de Valera. Whereas Molinet was sympathetic to Richard, Vergil was in Henry's service and drew information from the king and his subjects to portray them in a good light. Diego de Valera, whose information Ross regards as unreliable, compiled his work from letters of Spanish merchants. However, other historians have used Valera's work to deduce possibly valuable insights not readily evident in other sources. Ross finds the poem, "The Ballad of Bosworth Field", a useful source to ascertain