The honest answer, Lynda, is that I don't know, that is why I asked the question.
We all know how fake news, and false data is spread on the internet.
One person posts something, thousands copy it, and before you know, "It must be true, because everybody says so."
Original documentation, written at the time by contemporaries of the data subject, having first hand personal knowledge, is at times hard enough to accept, but when one gets into the realms of transcriptions, or quoting books written by individuals, however well respected, written decades after the event, I simply don't know how much credence we should attach to it.