A readable factual account, G-G. Very interesting. Henry Tudor had already overcome Lambert Simnel and set him to turn the spits in his kitchen. By making little of such pretenders, he was able to reduce their appeal in public imagination and therefore their threat.
He referred to "Richard" as the "Feigned Lad" - but FL was enough to worry him and keep him intrigued - even after his capture and subsequent "confession". Once he had captured "Richard" he reduced his supposed name of Peter Warbeck to "Perkin" a common-sounding derivative of the pet name "Peterkin" - little Peter. That way he downgraded him from a responsible adult with the ability to raise and lead an army, to a boy who was chancing his luck. Wily old fox, was Henry.
Ann Wroe very cleverly keeps the reader guessing as to what her own views on The White Rose of York. It is really difficult to tell whether she believes that he really was Richard Planagenet or some young man dragged into a intrigue with the promise of a crown, with the cynical view of running England from Burgundy through him.
If I recall, there was a TV documentary about him. A novel and a good, well-researched film or mini-series would be great watching, as Perkin Warbeck was important enough to make Henry feel very threatened and intrigued him as a person.