Re: I find that nappies
@gloucester Are you using the Humpty-Dumpty Words Means Whatever I Want Dictionary? This is what I find in reputable sources. And, no, I haven't omitted a second definition from further down the page.
OED 1. Very loyal and committed in attitude and 2. (Of a wall) of strong or firm construction.
Cambridge always loyal in supporting a person, organization, or set of beliefs or opinions.
Collins 1. loyal, firm, and dependable, 2. solid or substantial in construction, 3. (rare) (of a ship, etc) watertight; seaworthy
Merriam-Webster 1a : watertight, sound, 1b strongly built: substantial, 2 steadfast in loyalty or principle.
I'm afraid my knowledge of Old French isn't as good as yours, but some dictionaries appear to concur in your view that "staunch" derives from a 13C verb meaning "to stanch". If people are going to post to El Reg in archaic foreign languages, it would help to add some indication of which language they are using.