Hi,
I would be very interested in learning more about your dad's research. My great, great, great-grandfather was LUKE TAHANEY/TAHENY/TAHANY/TANNEY, born about 1802 in Sligo. Sometime in the 1830s he left Ireland and settled in Ontario, Canada. There were quite a few Tahaneys that also settled there and were listed in the 1851 Canada census----MARTIN, OWEN, PETER, (2) LUKES, HUGH, JAMES, all born ca. 1800-1820 in Sligo, Ireland. I look forward to hearing from you.