The oldest ancestor I can trace is my grandfather. Thomas Geoghegan. I do know that he had siblings as follows ...
Brother, b. about 1880 married and moved to Scotland believed Glasgow
Sister married a Bennett
Sister married a Rock
Sister married a Hughes - family known to have remained in Mullingar
Thomas Geoghegan (b. 1886 Westmeath d. 1941 Dublin) = Mary Bennett (b.1887, Westmeath d. 1958 Rochforthbridge, Westmeath)
Children ...
1. Edward (Ned) Geoghegan (b. 1910 Mulligar d. 1950, Dublin)
2. Kathleen Geoghegan (b. 1912 Mullingar d. 1913 Mullingar)
3. Mary (May, Baby) Geoghegan (b. 1914, Mullingar d. 1984 Rochfortbridge) = Michael McMenemy (no children)
4. Thomas (Sonny) Geoghegan (b. 1917 Dublin d. 1992 Gainesville GA, interred Kiltoom, Athlone) = Agnes Mahon (b. 1919, Malahide)
Children ... (all living Athlone, Ireland as of 1999)
1. Edward (Eddie) Geoghegan b. Malahide, 1951 = Anne Doyle (b. 1947, Castlecomer) - divorced
Children ...
i. Mary Agnes Geoghegan (b. 1980, Athlone)
ii. Rosemary Anne Geoghegan (b. 1981, Athlone)
2. Maurice Finbarr (Barry) Geoghegan (b. 1955, Malahide) = Frances Gallagher (b Newport, Co. Mayo)
Children ...
i. Keara Geoghegan (b. 1987)
ii. David Geoghegan (b. 1989)