from the 1500s to recent. sources:
Burke's Genealogical and Heraldic History of the Landed Gentry of Ireland
Andrea Payne's genealogy website, accessed 3 Apr 2023
papers of the Family of Smythe of Barbavilla, on reserve at the National Library of Ireland
The Smith Family (1904) by Compton Reade, M.A. Magdalen College, Oxford
The Lough Lene Bell discovered on property of Wm Barlow Smythe (1809-86)