In search of a good, detailed character compendium.

I've been searching, on the sub and elsewhere, for a good compendium, encyclopedia, guide, or otherwise of the most noteworthy characters from across Arthurian legend.

If anyone is familiar with the Oxford Guide to Arthurian Literature and Legend, that is very much the sort of thing I'm hoping for, but broader. It has, for example, a good 30-50 pages each on Gawain, Merlin, Tristan and Isolt, and goes in summary through all the key works that reference those characters, comparing and contrasting each to other. However, it only handles a small handful of characters in this way.

On the other end of things, I have (somehow) two copies of Ronan Coghlan's The Encyclopaedia of Arthurian Legends, which goes through an absolute ton of names, hundreds and hundreds, but only in the briefest of summaries. Gawain, for example, gets barely a page.

Does anyone know of a book that occupies a midground between these two?

It doesn't need to have 50 pages on Gawain, and it doesn't need to have an entry for Mellt (The father of one of the two Mabons listed as being followers of Arthur, apparently!), but if it had, say, a half dozen pages on most of the key players in the various tellings, that would be really excellent.