Family history sources suggest the Corkers were originally a Lancashire family. Thomas Corker purchased or leased property in the Inishannon area from the Earl of Cork (later the Duke of Devonshire)'s estate in the early eighteenth century. In 1850 the rental of lands in the barony of East Carbery, the property of Chambre Corker, was offered for sale in the Encumbered Estates Court. James Corker was one of the principal lessors in the parish of Inishannon, barony of East Carbery, at the time of Griffith's Valuation. In the 1870s, Mrs. Corker of Inishannon owned over 160 acres, while the representatives of John Corker were proprietors of 300 acres in county Cork.