Mamnitanemus
From BiblePortal Wikipedia
Hastings' Dictionary of the Bible [1]
Mamnitanemus ( 1Es 9:34 ) corresponds to the two names Mattaniah, Mattenai in Ezra 10:37 , of which it is a corruption.
International Standard Bible Encyclopedia [2]
mam - ni - ta - nē´mus ( Μαμνιτάναιμος , Mamnitánaimos ; Codex Vaticanus Μαμτιτάναιμος , Mamtitánaimos ; the King James Version, Mamnitanaimus): 1 Esdras 9:34, where it represents the two names Mattaniah and Mattenai in the parallel Ezra 10:37 , which probably represent only one person. It must be a corruption of these names. The Aldine gives a still more corrupt form, Μαμνιματαναΐμος , Mamnimatanā́mos .