Theus is a name of ancient Greek origin, derived from the word 'theos', meaning 'god'. It was popular among Greeks and Romans during classical antiquity but has since become quite rare. The name Theus is often associated with the god Zeus, the king of the gods in Greek mythology. In some cases, it may also be a shortened form of other names like Theodore or Theodoric.
"The name Theus has seen a steady decline in popularity over the past four decades, with peak years in the late 70s and early 80s, but only 11 occurrences between 2012 and 2015."