Alauna is the feminine form of the Gaulish god Alaunus or (possibly) an unrelated Celtic river goddess in her own right.
It appeared as the Latinized form of various placenames in Celtic Europe:
Alauna was a castra or fort in the Roman province of Britannia. It occupied a coastal site near the town of Maryport in the English county of Cumbria (formerly part of Cumberland).
In 2015 "Maryport's Mystery Monuments" was Research Project of the Year in the British Archaeology Awards.