Basque

Basque was a human language spoken in the northeast part of Spain and southwestern France.

In her magnum opus , Terise Haleakala-LoBrutto compared the way the proto-Romulans had derived their language, Rihan, from Old High Vulcan to the way Basque had derived from Latin. 


 * This is a factual error, though whether by LoBrutto or novelist Diane Duane is unclear. The Basque tongue is famously a with no connection to any other known language.