2000+ Boy Names That End in S

An ancient Roman names of unknown origin, generally (albeit rarely) encountered these days in its more streamlined Tarquin form. It was borne by two early kings of Rome.

Sounds a bit like an Australian airline.

Eligius comes from the same root as the word eligible. St. Eligius was a 7th century bishop in France and is the patron of goldsmiths and metalworkers.

Oengus is the old Irish form of the name most commonly found in the modern world as Angus, typically Scottish.
In Irish mythology, Oengus is the god of youth, love, and poetry.

Enviable meaning, but off-putting sound.

One of the middle names of Dwayne Wade's son Zion.