The Brittany; from the region of Brittany in France
A modern American creation, this name combines the popular prefix 'La-' with the established name Brittany. Brittany itself refers to the Celtic people who migrated from Britain to the northwest region of France. The name gained significant traction in the late 20th century as part of a trend of elaborating traditional names with rhythmic prefixes.
Less common today
Labrittany isn't in the latest US Top 1000. It last peaked at #5,535 in 1990.
US births per 5-year period, 1990βpresent (SSA data).