Alaban
A fountain in the Welsh country of Gwent, near which Merlin had a home.
The Galabes here is perhaps an allusion to the giant Galapas; it has also been suggested that Galabes is a variation of Galava, a northern province.
Layamon calls it Alaban, which suggests Albany, an old name for Scotland.
Sources
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Brut | Layamon, late 12th century to mid-13th century