From the longer Wikipedia page [1].

John Rous (c.1411-1491) was a medieval English historian, most notable for his book Historia Regum Angliae (History of the Kings of England), which describes British and English rulers from Brutus of Britain to Henry VII of England.

Rous spent most of his career in the service of the Yorkist dynasty. He was chaplain of the chapel of Guy's Cliffe in the reign of Richard III and canon of the collegiate church at Warwick. He was responsible for creating the "Rous Roll", which presents a pro-Yorkist version of recent English history. The "Warwick Roll" is an early family chronicle of the Beauchamp family, centring on the life of Richard Beauchamp, 13th Earl of Warwick. He collated the historically important illustrations for the works, but it is not known whether he was personally responsible for drawing them.

In the Rous Roll, written during the reign of king Richard III, he praised the monarch as a "good lord" who punished "oppressors of the commons".[3] However, he reversed himself when he wrote Historia Regum Angliae under Henry VII, and now portrayed Richard as a freakish individual who was born with teeth and shoulder-length hair after having been in his mother's womb for two years. His body was stunted and distorted, with one shoulder higher than the other. Rous also attributes the murder of king Henry VI to Richard, and claims that he poisoned his own wife.

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