Joan de la Pole was my 16th great-grandmother. One should stay away from Wikipedia and other amateurish sources and research more deeply with well-known and widely-read historians.
Having said that, one should not be scared away from more legitimate historians who also wrote works of fiction (more money).
An example is Thomas B Costain that more than one person, not knowing what they were talking about, said he was just a novelist. I have his four-volume history of English Kings from the Conqueror down to Henry the Eighth. Those volumes are history. He claimed that the name Plantagenet was the family of Henry !!'s father Geoffrey V d'Anjou. But I am also descended from Charlemagne and his grandfather Charles the Hammer (Charles le Martel - the name means "The Hammer" and Charlemagne was also a Martel. Geoffrey was born in Anjou, the northern centre of the Hammer's empire, Gaul. The name Plantagent described Geoffrey V of Anjou (Henry II's father) because he liked Yellow Gorse (at one time called "planta genista" before Carl Linneus renamed it) in his beret brim but adopted as the family name only by Richard II( (1377-1399) who rewrote English history in error after there were no more Martel descendants with a claim to the throne of England. I don't have is the family tree of Geoffrey to see if he was a male descendant of Charlemagne and his grandfather. Has anyone studied their lineage?
