Well, it looks like Katherine’s origins could be problematic. I’ll have to try & find what Richardson published.
https://our-royal-titled-noble-and-commoner-ancestors.com/p750.htm#... Identifies her father Richard as the same person as Richard Curzon, of Kedleston snippet above, but with an earlier wife.
But I see conversation suggesting she fits better chronologically with his father who had 27 children … or with the man of many titles.
https://groups.google.com/g/soc.genealogy.medieval/c/DpJmUZ-PeJk/m/...
Jeff Duvall says that Sir John Curzon ("of the white head") is "the better candidate . . . on chronological grounds" for the father of Catherine Curzon, wife of Nicholas Griffin; i.e. better than Richard Curzon who was her father according to CP 7:457. I don't follow Jeff's reasoning since he knows of "no other identifying information" for Richard.
In fact there was a Richard Curzon, living in 1432 and dead by 1451, who was esquire of the body to Henry VI; a retainer of and chamerlain to Richard Beauchamp, Earl, of Warwick; Captain of Sandgate Castle in 1432; John Talbot's Lieutenant of Chateau Gaillard, 1435, and of Rouen the next year, and the governor of Honfleur who surrendered it to Count Dunois in 1450. He married Isabel ____ and was rewarded for his services by the farm of all mines in Devon and Cornwall. See, e.g., CPR 1441-1446 pp. 178, 203, 351, 1446-1452 p. 501.
This Richard seems chronologically well suited to be the father-in-law of Nicholas Griffin (1426-1482).
Absent knowledge of where CP got the information that Catherine's father was named Richard, it also seems possible that Catherine was one of the many unnamed children of John "of the white head." Burke's presumably got this from J. Charles Cox's _Notes on the Churches of Derbyshire_ (1875-79) 3:179, where it is presented purely as a speculation.
