Pooles of Old Ross/Gorey/Ballyowen

Can anyone help me locate parish records for Old Ross St marys. COI records. I live in Australia and I am descended from Benjamin Poole c.1806 Gorey Wexford. He was married to Catherine Cavanagh. I have exhausted all available records, burials from this area and I have been directed to look in the Old Ross area.He had a brother William c. 1807 who also emigrated with him to Australia. Other researchers have suggested 3 more siblings: John 1802, Jacob 1803 and George 1811.