Possible meanings

1) ELLERY From the Cornish word for swans : elergh(y) 2) ELERCHI The parish name for Veryan in Domesday Book, later became, ELERGHY. 3) ELLERY may be derived from Hillion , a diminutive form of the English patronymic name Hilary , which was a Medieval given name from Latin Hilarius > hilaris, cheerful, glad. Hilary was a popular name among early Christians and was borne by several saints. Hillary, Hillery, Ellery, Elleray, Elray. 4) ALARIE / ALARY / AULAIRE were once common names in France