Sheahan
Sheehan was a common surname in County Limerick, but the Householder's Index will tell you how many Sheehan families there were in each parish circa 1850. Then search the valuation records from those parishes for a John Sheahan or Sheehan.Then search the church records from those areas.It won't be easy to find them but it might be possible, IF they did indeed come from that county.
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Re: Sheahan
John Sullivan 9/05/01