Muntins and Gadarene swine

Mullions wasn't really the word wanted; it was muntins. But I couldn't think of it. P.G. Wodehouse is fond of referring to the Gadarene swine, and K. never remembers what the reference is. I always know, but not exactly where to find it, chapter and verse. The Internet is wonderful in this way, although it's odd that often it's not the King James version that pops up first, but some more recent and less distinguished version. It was surprising that Brewer's, or at least our edition, doesn't have an entry for the porcine beings in question. Perhaps the assumption was that it was not anything that would require being looked up.