Sabrina is also the goddess of the River Severn in Celtic mythology .
A folk etymology later developed , deriving the name from a mythical story of a nymph , Sabrina , who drowned in the river .
Sabrina is also the Sabrina of the River Severn in Celtic mythology .
A folk etymology later developed , deriving the name from a mythical story of a nymph , Sabrina , who drowned in the river .