Ammianus

Meaning: “faithful”

Most probably of ultimate Semitic origin, the name probably meaning "faithful". May be compared with Hebrew אַמְנוֹן (amnón), the given name of David's eldest son, or, according to one variant, Hebrew אֲמִינון (aminon). Compare Arabic ء م ن (ʔ m n) and Hebrew א־מ־ן (ʾ-m-n), and Egyptian jmn (“Amun”). The semivowel in the -iānus component may be explained by popular Latin naming conventions in Ammian's time, see Grātiānus, Valentīniānus etc., and may have been an effort to "latinize" his native name.