[ merewīf] n. water-witch, B 1519.
merg- = mearg-, meri-, morg-, myrg-
[ mer-gealle], -gelle = [meargealle]
[ merian] to purify, cleanse, Sat: test. [‘mere’]
merien = [morgen]
[ merig] = (1) [myrge]; (2) [mearg]
merig- = myrg-
merigen (Æ, AO) = [morgen]