1770+ Boy Names Ending in O

Too childlike, in addition to the objectionable association with the el niño phenomenon.

One of the many outlandish names to come out of Canadian sci-fi series Killjoys.

Suave Spanish form of Eustace

The names Telmo and Elmo were historically interchangeable. San Temlo is the name of both a Mexican city and an island in Panama. Telmo was chosen by Spanish writer Borja Sémper and actress Barbara Goenaga Bilbao for their son born in 2016.

The name of the eponymous Hobbit, Bilbo is said by Tolkien himself to be "of unknown meaning". It’s also an unusual place name: Bilbo is the local Basque name for the city of Bilbao.

Rongo is a masculine Maori name stemming from both the name of a god and also the Maori word for peace, "rangimarie", which itself is occasionally used as a feminine name. Rongo was the name of the Maori god of cultivated food and of peace. In Maori culture the two ideas are closely linked - food can only be cultivated and plentiful when communities are at peace and working together. If Ringo, Rango and Rocco can get a look in, why not Rongo?

From the root that gives us "benign," Benigno is not as accessible in English-speaking cultures as such names as Bruno and Benicio. Filipino Senator Benigno Aquino, Jr., went by his nickname Ninoy. 

Roreto is a handsome Italian place-name that is reminiscent of and might be shortened to the Irish Rory.