Certainly not, Catalan is a Romanic language, Basque existed before the Romans and is not a part of any known language group.
Their unique and very old Basque language, plus either French or Spanish, because the Basque region is divided between France and Spain.
Many of the basques in both sides of the frontier (Spain and France) speaks Euskera alongside with spanish or french. The most number of speakers of euskera is in the spanish basque country and...
Eskerrik asko
From the grandson of Noah, Tubal son of Japeth. Sometime around 15000 b.c