Richard was a royal prince until the death of his brother Edward IV in 1483.

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The future Edward IV, leading a Yorkist army, routed the Lancastrians, captured King Henry VI and seized the throne.

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It is true that before this crime, Richard was a conspicuously loyal lieutenant to the boy's father, his own brother, King Edward IV.

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Edward IV went on to rule, with a brief interruption, until his death 22 years later a death that triggered the final stage of the conflict and the rise of a new dynasty under Henry Tudor.

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