The name is derived from a Latin element meaning, “eloquent.”
It was borne by an early Spanish saint and martyr and was a fairly common name in the region of Castille during the Middle Ages but is now a rather obsolete name in Spain.
It is, however, a very popular name in Argentina. This is most likely due to the fame of Colonal Facundo Quiroga (1788-1835). Quiroga was a supporter and promoter of federalism during the formation of Argentina.
The name is borne by several other famous Argentines, including Facundo Arana (b.1971) and Facundo Cabral (1937-2011).
Currently, Facundo is the 10th most popular male name in Argentina, (2009).