In ancient Rome

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

, a camillus (fem. camilla) was an acolyte

Acolyte

In many Christian denominations, an acolyte is anyone who performs ceremonial duties such as lighting altar candles. In other Christian Churches, the term is more specifically used for one who wishes to attain clergyhood.-Etymology:...

 in various rituals. If the camillus was a child of the cult's officiant (as often happened), the child had to be free-born and under the age of puberty, and both parents had to be alive.

Camillus was also a cognomen

Cognomen

The cognomen nōmen "name") was the third name of a citizen of Ancient Rome, under Roman naming conventions. The cognomen started as a nickname, but lost that purpose when it became hereditary. Hereditary cognomina were used to augment the second name in order to identify a particular branch within...

 derived from the general term, most famously used by Marcus Furius Camillus

Marcus Furius Camillus

Marcus Furius Camillus was a Roman soldier and statesman of patrician descent. According to Livy and Plutarch, Camillus triumphed four times, was five times dictator, and was honoured with the title of Second Founder of Rome....

 and by other members of the gens Furia.