Well, I always knew the Stanley brothers were sh-1-ts (yes, I’m being relatively polite – that is a 1 not an i) and this article (link below) confirms my opinion. No doubt a lot of you will already know the story of the Harringtons’ struggle against the thieving self-interest of the Stanley brothers, Thomas and William, who wanted everything, especially the Harringtons’ seat of Hornby Castle in Lancashire. But Edward IV intervened and settled in favour of the Stanleys, presumably because he wanted their support. He granted Thomas Stanley the custody and marriages of the two Harrington heiresses. So Richard wasn’t able to save the family from the Stanleys, but it certainly aroused the latter’s ire.
Many of you will also have read this 2010 article or Hipshon’s book, but in case you haven’t, it is very informative. This bitter quarrel, and Richard’s support for the Harringtons, which was renewed when he became king, probably is behind the treachery at Bosworth. Nothing to do with Henry Tudor and Margaret Beaufort, but everything to do with an overwhelming desire to be avenged on Richard for backing the Harringtons. The Stanleys bore an almighty grudge, but hid it behind apparent new allegiance to Henry Tudor. My opinion, of course.
Footnote: The events described above, i.e. Richard coming out in favour of the Harringtons in the 1460s, came to a head only a week or so after an earlier instance of Thomas Stanley’s propensity for treachery against England’s reigning king, this time Edward IV, and it was Richard who exposed him. Edward must have regretted deciding in Stanley’s favour. I will describe it all in an article scheduled for the day after tomorrow.