A geologists' name for a former island which existed in the Mesozoic and during continental drift and orogeny became an area of land in or around Cornwall.
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Cornubia, Queensland, a southern suburb of Brisbane, Queensland, Australia
Having landed "in the region of Léon", he continued his journey southwards to the kingdom of Cornouaille (Latin Cornubia) and set up a hermitage at what would become known as Locronan, near the woods of Névez.