Ambrosius or Ambrosios (a Latin adjective derived from the Ancient Greek word ἀμβρόσιος, ambrosios "divine, immortal") is a given name and a surname. Notable people with the name include: Saints. Ambrosius Alexandrinus, a Latinization of the name of Ambrose of Alexandria (before 212 – c.250), Egyptian theologian and saint. Saint Ambrose (Aurelius Ambrosius) (c. 340–397), bishop of Milan. Ambrosius of Optino (1812–1891), Russian Orthodox monk. Ambrosius Gudko (1867–1918), Russian Orthodox saint and bishop. Given name. Ambrosius Aurelianus, fifth-century war leader of the Romano-British.
https://en.wikipedia.org/wiki/Ambrosius