Gaius Coelius Caldus was a consul of the Roman Republic in 94 BC alongside his colleague Lucius Domitius Ahenobarbus.

In 107 BC, Coelius Caldus was elected tribune of the plebs and passed a lex tabellaria, which ordained that in cases of high treason in the courts of justice the voting should be secret with each voter marking their decision on a clay tablet. Cicero stated that Caldus regretted this law as having been the source of injury to the republic. He was a praetor in 100 or 99 BC, and proconsul of Hispania Citerior the following year.T.R.S. Broughton, The Magistrates of the Roman Republic (American Philological Association, 1952), vol. 2, pp. 1 and 3 (note 2).

Coelius' portrait appears on a small series of Roman silver coins from the late republic.http://www.moneymuseum.com/frontend/coins/periods/coin.jsp?lang=en&i=96767&pid=4529201&gid=51&cid=179&pi=-1&ps=10 Some of his coins feature the boar emblem of Clunia.Broughton, MRR2, p. 3.

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