**Farn-Sasan** was the last king in the Indo-Parthian Kingdom who ruled Sakastan from about 210 to 226. There are no books that talk about him. He is only known because of the coins he issued. He was killed in 226 by the ruler Ardashir I. Because of this, the Indo-Parthian rule ended.

Origin of name
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Then name "Sasan" was popular with the Indo-Parthian people. The origin of the name is not entirely known. David Neil MacKenzie and V.A. Livshits says that the name comes from Old Iranian, translating to \**Sāsāna* ("defeating enemy"). It is also the name of a Zoroastrian deity.

Biography
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Farn-Sasan went into the Indo-Parthian throne sometime in 210. They don't know what king was before him. They think it may have been Pacores. Farn-Sasan is not mentioned in any books. He is only known because of his coins. These coins all say "Farn-Sasan, son of Adur-Sasan, grandson of Tirdat, son of the grandson of Sanabares, the King of Kings." Farn-Sasan tried to make himself notable by his rule by showing that he was related to his great-grandfather, Sanabares, a famous Indo-Parthian king. He calls the King of Kings Sanabares the King of Kings. Farn-Sasan also called himself the King of Kings. This happened a lot in Achaemenid and Parthian rulers.

Coin of the Sasanian monarch Ardashir I (r. 224–242), minted at Hamadan between 226–230
Adur-Sasan and Tirdat were never a ruler. This means that Farn-Sasan was probably from a cadet branch in the dynasty.

On the front side of the coins, he is seen with a cap. On the other side, a fire altar is shown. The altar has writing around it. Farn-Sasan is the only king that is known to have a fire altar on coins that is also from Sakastan. Around the same time, Ardashir I (r. 224–242) made coins with a fire-altar that looked like Farn-Sasan's coins. Historians are not sure if Farn-Sasan copied the fire altar or if Ardashir I copied the fire altar off of Farn-Sasan.

Farn-Sasan and Sasanian Ardashir I share a similar name. Because of this and the fact that both of their coin has a fire altar, historians think Sasanians and Indo-Parthians may have had common ancestry. Historians say that Farn-Sasan and Sasanian Ardashir I were rivals. Both wanted to be the King of Kings. The Iranologist Khodadad Rezakhani argues that Farn-Sasan was a superior of Ardashir I. He said that Ardashir I was only able to say that he was the King of Kings after he defeated Farn-Sasan in 226 and ended Indo-Parthian rule.

Sources
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* Daryaee, Touraj; Rezakhani, Khodadad (2016). *From Oxus to Euphrates: The World of Late Antique Iran*. H&S Media. pp. 1–126. ISBN 9781780835778.
* Kalani, Reza. 2017. *Multiple Identification Alternatives for Two Sassanid Equestrians on Fīrūzābād I Relief: A Heraldic Approach*. Tarikh Negar Monthly.
* Olbrycht, Marek Jan (2016). "Dynastic Connections in the Arsacid Empire and the Origins of the House of Sāsān". In Curtis, Vesta Sarkhosh; Pendleton, Elizabeth J.; Alram, Michael; Daryaee, Touraj (eds.). *The Parthian and Early Sasanian Empires: Adaptation and Expansion*. Oxbow Books. ISBN 9781785702082.
* Rezakhani, Khodadad (2017). *ReOrienting the Sasanians: East Iran in Late Antiquity*. Edinburgh University Press. pp. 1–256. ISBN 9781474400305.