I'm researching the Dacks of Ireland.
My ancestor is Willaim Dack, b ca 1760, m Jane Code (Coad) b ca 1765, ca 1790. Jane's parents were George b 1733 and Rachel b 1738. William's father; Matthew b ca 1734. Some records exist at the Aghold Church, near Shillelagh. Their children were born in and around Boley, Aghold, or maybe even in Dublin.
They came to Canada, best we can figure, on the ship "Majestic" out of Belfast, ca 1817.
Happy to share what I know and would love to hear any other information.