From Britain or Brittany
An elaborated modern variant of Brittany, referring to the Celtic people of Britain or the Brittany region of France. It emerged in the late 20th century as a more rhythmic, feminine extension of the then-popular geographic name.
Less common today
Brittanya isn't in the latest US Top 1000. It last peaked at #5,453 in 2009.
Social media personality and reality television star
US births per 5-year period, 1990βpresent (SSA data).