Henry VI of England

Henry VI was King of England from 1422 to 1461 and again from 1470 to 1471, and disputed King of France from 1422 to 1453. The only child of Henry V, he succeeded to the English throne at the age of nine months upon his father's death, and succeeded to the French throne on the death of his maternal grandfather Charles VI shortly afterwards.
Margaret of Anjou

Margaret of Anjou was the Queen of England by marriage to King Henry VI from 1445 to 1461 and again from 1470 to 1471. Born in the Duchy of Lorraine into the House of Valois-Anjou, Margaret was the second eldest daughter of René, King of Naples, and Isabella, Duchess of Lorraine.
Richard Neville, 16th Earl of Warwick

Richard Neville, 16th Earl of Warwick, 6th Earl of Salisbury, 8th & 5th Baron Montagu, 7th Baron Monthermer,, known as Warwick the Kingmaker, was an English nobleman, administrator, and military commander. The eldest son of Richard Neville, 5th Earl of Salisbury, Warwick was the wealthiest and most powerful English peer of his age, with political connections that went beyond the country's borders. One of the leaders in the Wars of the Roses, originally on the Yorkist side but later switching to the Lancastrian side, he was instrumental in the deposition of two kings, which led to his epithet of "Kingmaker".
Battle of Tewkesbury

The Battle of Tewkesbury, which took place on 4 May 1471, was one of the decisive battles of the Wars of the Roses. The forces loyal to the House of Lancaster were completely defeated by those of the rival House of York under their monarch, King Edward IV. The Lancastrian heir to the throne, Edward, Prince of Wales, and many prominent Lancastrian nobles were killed during the battle or were dragged from sanctuary two days later and immediately executed. The Lancastrian king, Henry VI, who was a prisoner in the Tower of London, died or was murdered shortly after the battle. Tewkesbury restored political stability to England until the death of Edward IV in 1483.
Battle of Barnet

The Battle of Barnet was a decisive engagement in the Wars of the Roses, a dynastic conflict of 15th-century England. The military action, along with the subsequent Battle of Tewkesbury, secured the throne for Edward IV. On 14 April 1471 near Barnet, then a small Hertfordshire town north of London, Edward led the House of York in a fight against the House of Lancaster, which backed Henry VI for the throne. Leading the Lancastrian army was Richard Neville, Earl of Warwick, who played a crucial role in the fate of each king. Historians regard the battle as one of the most important clashes in the Wars of the Roses, since it brought about a decisive turn in the fortunes of the two houses. Edward's victory was followed by 14 years of Yorkist rule over England.
House of York

The House of York was a cadet branch of the English royal House of Plantagenet. Three of its members became Kings of England in the late 15th century. The House of York was descended in the male line from Edmund of Langley, 1st Duke of York, the fourth surviving son of Edward III, but also represented Edward's senior line, being cognatic descendants of Lionel, Duke of Clarence, Edward III's second surviving son. It is based on these descents that they claimed the English crown. Compared with the House of Lancaster, it had a senior claim to the throne of England according to cognatic primogeniture but junior claim according to the agnatic primogeniture. The reign of this dynasty ended with the death of Richard III of England at the Battle of Bosworth Field in 1485. It became extinct in the male line with the death of Edward Plantagenet, 17th Earl of Warwick in 1499.
Edward of Westminster, Prince of Wales

Edward of Westminster, also known as Edward of Lancaster, was the only son of King Henry VI of England and Margaret of Anjou. He was killed at the Battle of Tewkesbury, making him the only heir apparent to the English throne to die in battle.
Henry Beaufort, 3rd Duke of Somerset

Henry Beaufort, 3rd Duke of Somerset was an important Lancastrian military commander during the English Wars of the Roses. He is sometimes numbered the 2nd Duke of Somerset, because the title was re-created for his father after his uncle died. He also held the subsidiary titles of 5th Earl of Somerset, 2nd Marquess of Dorset and 2nd Earl of Dorset.
John Wenlock, 1st Baron Wenlock

John Wenlock, 1st Baron Wenlock KG was an English diplomat, soldier, courtier and politician. He fought on the sides of both the Yorkists and the Lancastrians in the Wars of the Roses. He has been called "the prince of turncoats", although some historians suggest the label may not be fair. Others contend that even when Wenlock was not actually changing sides, he was engaged in "fence sitting par excellence."
Issue of Edward III of England

King Edward III of England is the ancestor of many European monarchs through his sons Lionel of Antwerp, 1st Duke of Clarence; John of Gaunt, 1st Duke of Lancaster; Edmund of Langley, 1st Duke of York and Thomas of Woodstock, 1st Duke of Gloucester. All of Edward's legitimate children were by his wife Philippa of Hainault.
Margaret Beaufort, Countess of Devon
Lady Margaret Beaufort was a great-granddaughter of King Edward III (1327–1377).
John Courtenay, 15th Earl of Devon

Sir John Courtenay was the third son of Thomas Courtenay, 13th Earl of Devon, and Margaret Beaufort, and was styled Earl of Devon by Lancastrians in exile, following the execution of his brother the 14th earl in 1461.
Readeption of Henry VI

The Readeption was the restoration of Henry VI of England to the throne of England in 1470. Edward, Duke of York, had taken the throne as Edward IV in 1461. Henry had fled with some Lancastrian supporters and spent much of the next few years in hiding in the north of England or in Scotland, where there was still some Lancastrian support. Henry was captured in 1465 and was held as a prisoner in the Tower of London. Following dissent with his former key supporter, Richard Neville, 16th Earl of Warwick, Edward was forced to flee in 1470. Henry was then restored to the throne.
Wars of the Roses

The Wars of the Roses were a series of English civil wars for control of the throne of England fought between supporters of two rival branches of the royal House of Plantagenet: the House of Lancaster, associated with a red rose, and the House of York, whose symbol was a white rose. Eventually, the wars eliminated the male lines of both families. The conflict lasted through many sporadic episodes between 1455 and 1487, but there was related fighting before and after this period between the parties. The power struggle ignited around social and financial troubles following the Hundred Years' War, unfolding the structural problems of feudalism, combined with the mental infirmity and weak rule of King Henry VI which revived interest in Richard of York's claim to the throne. Historians disagree on which of these factors to identify as the main reason for the wars.