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Family name Killiam (Killiam
) , worldwide, is a very rare surname. The cognomen Killiam is habitual in Nicaragua, where it is a very rare surname, Venezuela, and Canada. Not in comparison with a country's population, it is commonest in the United States, Venezuela, and Canada. Also, Killiam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Killiam | United States, France, Venezuela, Colombia, Canada |