Fiacha Finnfolaidh & Eithne of Alba 
They had a son named Tuathal.
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Personal Details
Death Notes
B: Bet. 55 and 56
Fiacha Finnfolaidh
Fiacha was born in 0029.1 He died at the age of 26 in 0055.2
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Children
Birth Notes
B: Bet. 55 and 57Death Notes
D: Bet. 100 and 106
Tuathal Teachtmhar
Tuathal was born in 0057.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=randyj2222&id=I35469&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I30053&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I30053&style=TABLE