There are few more fertile sources for intricate information about the medieval past (and other areas too, of course) than theses that have been published online. A prime website for these is White Rose eTheses on line, of which I have written before. I am mentioning the site again now because of finding a particularly absorbing 2016 thesis by Anna Maria Duch for her PhD at the University of York. It is titled The Royal Funerary and Burial Ceremonies of Medieval English Kings, 1216-1509 and can be found here.
It deals with all our medieval monarchs, but contains a great deal of interest to those who study the Wars of the Roses, and in particular Henry VI, Edward IV and, of course, Richard III. There is a long discussion of Richard’s motives in moving Henry VI’s remains from Chertsey, and again about whether or not he “disposed” of his nephews. The age-old question of that urn crops up as well.
Other kings aren’t neglected, I promise.
This is a book-length work, and needs close attention to be fully appreciated. A recommended read.