Tranquillitas

thumb|Tranquillitas depicted on a silver coin issued by Hadrian In Roman mythology, Tranquillitas was one of the Imperial virtues and the personification of tranquility. She began to be portrayed as a deity in the 1st century CE alongside the goddesses Securitas, Tutela, and the pre-existing Salus. Together, these deities were responsible for the well-being and safety of Rome. She was likely the goddess of calm seas and associated with the food supply, maritime trade, and the security of the state.

== Function and worship == Under the Roman Republic, multiple virtues such as Virtus, Honos, and Pietas were given human forms and worshipped as minor deities with temples and cults. This practice was expanded upon during the Roman Empire, with the number of deified virtues expanding from around 16 to around 30. The new virtues were often used as tools of imperial propaganda, and tended to embody ideas of peace (pax) and security. Tranquillitas began to appear in the 1st century CE, and was frequently depicted on coinage beginning in the 2nd century CE. While Tranquillitas is an ambiguous figure, she may have been generally associated with political tranquility and public stability.