A later, related, development was the granting of the first viscountcy in Ireland in 1478 to a Preston, Lord Gormanston, the Premier Viscount of Ireland, who at the time was a major landowner in the Fingal area, and a direct descendant of Walter de Lacy. That viscountcy was called after Gormanston as the latter was the principal seat and Manor of the Prestons at the time, having been acquired upon their relinquishment of occupancy of the Manor of Fyngallestoun. The Viscounts Gormanston continued to retain the Lordship of the latter under reversion., and the prescriptive barony of Fingal was also retained by the Viscount Gormanston as an incorporeal hereditament "in gross", until passed to the late Patrick Denis O'Donnell.