I'M INDEBTED TO CORMAC GORDON (CO. WICKLOW), URSULA STASZYNSKI AND THE LATE SHEILA HUSSEY FOR ALL THEIR HELP WITH MY HUSSEY RESEARCH.
According to family sources, our Hussey family came from the Dingle area of Co. Kerry, but we have discovered that William's son, also named William, was born in Castleisland, Co. Kerry. I am therefore assuming that our Husseys came from Castleisland rather than Dingle. Griffith's Valuation (1847-1864) data was checked for Husseys in Castleisland and eight parcels of land were occupied by Husseys at the time: three in the townland of Caheragh, two in Crag, and one each in Dromultan, Kilbannivane and Moanmore. It's possible our Husseys hailed from one of these townlands.
Note: The Hussey surname is common throughout Ireland, especially in counties Kerry and Galway. There were originally two groups of Husseys in the country, the 'Ó h-Eodhasa' family of Co. Fermananagh and the Norman 'de Hosey' family who settled in counties Meath and Kerry.