Darius, Darius'

Facts:

Darius was the name of several kings of Persia. It is possible that "Darius" was a title rather than a name.

"Darius the Mede" was the king who was tricked into having the prophet Daniel thrown into a lion's den as punishment for worshiping God.
"Darius the Persian" helped facilitate the reconstruction of the temple in Jerusalem during the time of Ezra and Nehemiah.