From Britain or land of the Britons
Brithany is a modern creative spelling of Brittany. It originally referred to the region in northwest France settled by Celtic Britons who fled the Anglo-Saxon invasions of England.
Less common today
Brithany isn't in the latest US Top 1000. It last peaked at #3,047 in 2015.
US births per 5-year period, 1990–present (SSA data).
