Isabelle is a popular feminine given name with roots tracing back to the German name Adelheid through its Occitan form Izabel. Derived from 'adal', meaning noble, and 'heid', meaning kind or sort, Isabelle translates as "noble kind". It gained popularity during medieval France via Norman invaders and was further popularized by Queen Isabella of France in the 14th century. Throughout history, notable figures such as Isabelle of Angoulême and Isabella di Morra have borne this name, which remains globally popular today.