Perses was not one of the original twelve Titans born to Gaia and Uranus, but he was a child of one of those Titans (Crius) and was thus sometimes called a Titan as well.
According to the common tradition, Perses and his wife Asteria had a daughter named Hecate. In other traditions, however, Hecate was the daughter of Zeus rather than Perses.
The name “Perses” (Greek Πέρσης, translit. Pérsēs) may be related to the Greek word πέρθω (pérthō), meaning “destroy” (itself a word of uncertain etymology).
Πέρσης (translit. Pérsēs)
The ancients had little to say about Perses or his attributes. However, the poet Hesiod did describe him as “eminent among all men in wisdom.”1
Perses is a shadowy figure; his role in Greek mythology appears to have been limited to his genealogical function as the husband of Asteria and the (possible) father of Hecate.
Hesiod (eighth/seventh century BCE): Perses’ genealogy is outlined in Hesiod’s Theogony.
Apollodorus (first century BCE or first few centuries CE): Perses’ genealogy and mythology are summarized in the Library.
Hyginus (first century CE or later): The Fabulae, a Latin mythological handbook, mentions Perses and his genealogy.
Smith, William. “Perses.” In A Dictionary of Greek and Roman Biography and Mythology. London: Spottiswoode and Company, 1873. Perseus Digital Library. Accessed November 2, 2021. https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0104%3Aalphabetic+letter%3DP%3Aentry+group%3D15%3Aentry%3Dperses-bio-1.
Theoi Project. “Perses.” Published online 2000–2017. https://www.theoi.com/Titan/TitanPerses.html.
Thurmann, Stephanie. “Perses .” In Brill’s New Pauly, edited by Hubert Cancik, Helmuth Schneider, Christine F. Salazar, Manfred Landfester, and Francis G. Gentry. Published online 2006. http://dx.doi.org/10.1163/1574-9347_bnp_e915170.