Tirdadh was the first king of the Gilites, ruling during an unknown date between the 9th and 10th-century. He was succeeded by Lili ibn al-Nu'man. Tirdadh had a son named Harusindan, who would later succeed Lili ibn al-Nu'man as the new ruler of the Gilites.
. The Cambridge History of Iran, Volume 4: From the Arab Invasion to the Saljuqs . 1975 . Cambridge University Press . Cambridge . Frye . R. N. . Wilferd Madelung . The Minor Dynasties of Northern Iran . 198–249 . 978-0-521-20093-6 . https://books.google.com/books?id=hvx9jq_2L3EC&pg=PA198.