From Britain or the land of the Britons
A rare variant spelling of Britain, referring to the island of Great Britain. It is derived from the Latin 'Britannia', which was used by the Romans to describe the region inhabited by the Britons. As a given name, it functions as a modern place-name choice.
Less common today
Britian isn't in the latest US Top 1000. It last peaked at #6,776 in 1994.
US births per 5-year period, 1990βpresent (SSA data).