>>57071140>>57071784She was offered a lifespan beyond a normal human's, as she had been chosen by Arceus to aid Her Champion in Her batman gambit., there's no evidence to support she's immortal, nor confirmation of exactly how far back in Cynthia's family tree she's placed. She could either be Cynthia's Great-Grandmother or grandmother (as a trope older than paper is being rewarded by the Gods for acts of fealty and humility. And as Cogita gave up her kin and clan to act as Arceus' messenger on earth, she absolutely earned a reward for her faithfulness). That Celestic town is situated where Cogita's retreat lay in Hisui, the fact the town's name is "Town of the Celestics" and the fact the village has a matriarchal society all point to either Cogita founding Celestic town deliberately by inviting settlers, or it growing up around her abode after the events of L: A as Sinnoh became more populated.
Or that shitpost of mine about Cogita being Arceus taken human form to marry the re-incarnated Ancient Hero again and again is actually true and Cynthia IS a demi-goddess.