Anyway, I paid a pretty penny for my copy of In Convent Walls several years ago, which means, of course, that it's now available as a reprint on Amazon, along with a number of other novels by Holt. (Higginbotham's Rule: When you find and buy an out-of-print book after years of searching, it will soon be reissued at a fraction of the price that you paid for it.) Holt's White Rose of Langley, which features the very same Constance of York you'll recognize from Brian Wainwright's excellent novel, Within the Fetterlock, is also available as a reprint on Amazon and on Kindle, though you can also read it for free online.
Holt wrote several novels set during the Wars of the Roses, including one featuring Anne Neville's stint as a kitchenmaid and one about Perkin Warbeck, but they seem pretty hard to come by. Perhaps some accommodating person might bring them back into print?
Speaking of the Despensers, the late Joan Aiken wrote several Jane Austen sequels before they became as ubiquitous as they are now. One, Jane Fairfax, features this amusing little snippet:
Mrs. Fitzroy had been a Despenser, as she lost no time in informing any new acquaintance considered worthy of the honour; one of her ancestors had been the last Justiciary of England and another had been the Earl of Winchester, executed in 1322 by Queen Isabella. "No doubt she had her reasons," Colonel Campbell was in the habit of darkly muttering to himself when he chanced to hear one of his mother-in-law's not infrequent repetitions of this piece of history.
1322? Ah, well. It's still entertaining.
Oh, I keep forgetting to mention that Maurice Druon, author of Les Rois Maudits (The Accursed Kings), died on April 14. I was sad to hear of his death, though I have to admit that I found his depiction of Edward II and Hugh le Despenser to be a tad over-the-top. Still, he seems to have led a fascinating life; there's a good obituary of him here.