Allerby is a hamlet in the civil parish of Oughterside and Allerby, Cumbria, England.
Toponymy Allerby was originally called Ailward's', that is 'Æðelward's, Crosby', afterwards reduced to 'Ailward's bȳ'." So, "the village or hamlet of Ailward". ( is Old English from the Old Norse , meaning 'village' or 'hamlet'.)
References
External links
Cumbria County History Trust: Oughterside & Allerby (nb: provisional research only - see Talk page)