Hi John . . .
Welcome to Ireland Reaching Out . . .
Yours is a very worthwhile search . . . and hopefully . . you will continue . . . to find success . .
Our professional searchers . . . have NOT picked up on your query . . . so . . I had a look . . .
A(u)ghmacart . . . Google Maps . . is in Laois(e) County . . . then known as Queens Co. .. where we ...IRO ...would be very
unlikely to have a local Volunteer . . . to help you in your journey . . . however . . lets see if we can be of any assistance . . .
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https://registers.nli.ie/parishes/0968
This would indiate an R.C. Church . . . in that district . . .recording happenings . . as early as 1789
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There is a record from 1823 - 1837 . . . a TAX collection roll ( somethings never change !! ) known as " Tithes Applotment " . . .
http://titheapplotmentbooks.nationalarchives.ie/search/tab/results.jsp?surname=Fitzpatrick&firstname=&county=Queen%27s&parish=&townland=&search=Search
here . . you will find . . the first 12 entries . . . are Fitzpatricks of Aghmamart . . . which . . just have to be your earliest Farming Ancestors . . .
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So here's a big question . . . . in my search . . . I looked next . . at another TAX roll . . a.k.a. " Griffiths Valuation" 1847 - 1864 . . .
but . . there are NOW . . . NO. . . Fitzpatricks . . recorded at that location . .
http://www.askaboutireland.ie/griffith-valuation/index.xml?action=doNameSearch&Submit.x=50&Submit.y=9&familyname=FitzpatrickFamily+Name&firstname=First+Name&baronyname=&countyname=QUEEN%27S&unionname=&parishname=AGHMACART
So. . .do we "guess" . . that the last of the Family . . have left that location . . sometime between 1837 and 1847 . . (most likely to Emigration )
joining the million others who were fleeing Ireland in those years . . .1847 = 1851 ...The Great Irish Famine . . known as "An Gorta Mór ". . .
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Next . . I looked at our National Census of 1901 . . .
http://www.census.nationalarchives.ie/search/results.jsp?census_year=1901&surname=Fitzpatrick&exact=&firstname=&county19011911=Queen%27s+Co.&county1821=&county1831=&county1841=&county1851=&townland=&ded=Rathdowney&age=&sex=&relationToHead=&religion=&education=&occupation=&marriageStatus=&marriageYears=&childrenBorn=&childrenLiving=&birthplace=&nativeCountry=&language=&deafdumb=&houseNumber=&familiesNumber=&malesNumber=&femalesNumber=&maleServNumber=&femaleServNumber=&estChurchNumber=&romanCatNumber=&presbNumberDiv=&protNumber=&parish=&barony=&yearsMarried=&causeOfDeath=&yearOfDeath=&familyId=&ageInMonths=&search=Search&sort=&pageSize=100
Here . . . it is telling me . . . that there were NO known . . . Fitzpatricks . . . living in that Townsland in 1901 . . .
Most of that family name . . as you will see . . are residents of the nearby Town of Rathdowney . . .
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SO . . who that Woman . . . that tried to help you . . when then you visited . . . is impossible to know . . who she was . . BUT . .
I would suggest . . that you might like to take your search . . to the Principal and Pupils . . of nearby Cullohill, Co.Offaly . . . National School . ..
copy . . to The Secretary of the Cullohill Comunity Centre . . .
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Apologies JOHN . . . that we could not be of more help . . . best we could do . . .
But we encourage you to persist with your search . . . to . . hopefully . . a successful conclusion . . . and a welcome back to Ireland . . whenever . .
Kindest Regards . .
Eamonn.