Herod = Herod Antipas. Son of Herod the Great by Malthace. See App-109.
tetrarch. The Greek word transliterated = a governor over the fourth part of any region; but the word subsequently lost its strict etymological meaning, and came to denote any petty prince not ruling over an entire country. So called from tetartos = fourth.
heard of the fame. Figure of speech Polyptoton. Greek. ekousen. . akoen.