Lahabrea might have ties to Sabik. Sabik is a star in the constellation of Ophiuchus, the 13th constellation in the zodiac.in real life. Ophiuchus and Zodiark are linked since FFT, where Elidibis was a hidden boss in Deep Dungeon, who had the Zodiac sign of Serpentarius/Ophiuchus(depending on translation). He had the unique summon Zodiark, which could be learned by a Summoner if they were hit with it.

Maybe Lahabrea he's original name is Sabik? Or Sabik was the name of the main person in the Convocation to initiate the summoning?