The gens Coponia was a plebeian family at Rome.
The most famous of the gens may have been Gaius Coponius, praetor in 49 BC, and a partisan of Pompeius, whom although proscribed by the triumvirs in 43, was subsequently pardoned, and came to be regarded as a greatly respected member of the Senate.
[1] The Coponii originally came from Tibur, where an inscription bearing the name was found.
[1] The Coponii are known to have used the praenomina Titus, Marcus, and Gaius.
Dictionary of Greek and Roman Biography and Mythology.