Jivadaman was a Saka

Saka

The Saka were a Scythian tribe or group of tribes....

 ruler of the Western Kshatrapas

Western Kshatrapas

The Western Satraps, Western Kshatrapas, or Kshaharatas were Saka rulers of the western and central part of India...

 in northwestern India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 from during the 2nd century CE. He was the son of Damajadasri I

Damajadasri I

Damajadasri I was a ruler of the Western Kshatrapas dynasty. His reign saw the decline of dynasty after his dominions were conquered by the Satavahanas and saw the rise of the Abhiras in the south and Malavas in the north....

 (170–175), and the brother of Satyadaman.

With Jivadaman, Western Satrap coins started to be minted with a date, recorded in Brahmi

Brāhmī script

Brāhmī is the modern name given to the oldest members of the Brahmic family of scripts. The best-known Brāhmī inscriptions are the rock-cut edicts of Ashoka in north-central India, dated to the 3rd century BCE. These are traditionally considered to be early known examples of Brāhmī writing...

 numerals bekind the king's head. According to his coins, Jivadaman seems to have ruled two times, once between 100 and 103 CE, before the rule of Rudrasimha I

Rudrasimha I

Rudrasimha I was a Western Kshatrapa ruler, who reigned from 178 to 197 CE. From the reign of Rudrasimha I, the date of minting of each coin, reckoned in the Saka era, is usually written on the obverse behind the king's head in Brahmi numerals, allowing for a quite precise datation of the rule of...

, and once between 119 and 120 CE.