Daniel 5:29

Belshazzar : the deputy king of Babylon after Nebuchadnezzar

Daniel : the prophet who wrote the book of Daniel,son of David and Abigail,head of clan (Ithamar Levi) who pledged to obey God's law,prophet who wrote the book of Daniel

Daniel 6:1-2

Daniel : the prophet who wrote the book of Daniel,son of David and Abigail,head of clan (Ithamar Levi) who pledged to obey God's law,prophet who wrote the book of Daniel

Darius : king of Persia after Cyrus and Artaxerxes Smerdis; Darius I,son of Ahasuerus; Darius II the Mede,king of Persia after Darius II; Darius III the Persian