Griffith Valuation of Ireland, for tax purposes all land owners and occupiers are listed. The Tithe Applotements of 1820's do the same and both are considered complete and use as census substitutes.
All share houses, outbuildings and land 15 acres.2 roods.37 perches & 35.0.21 they are tenants of St. George Gore, in the Glenamaddy Village, Parish of Boyounagh, Townland of Classaghroe. Glennamaddy is also a Civil Parish and a Poor Law Union/Civil Registration District(bmd's after 1864)
There were a total of 676 Fahy in Galway, of those 141 were called Patrick. I could find no Glenamaddy or Shannaghmore
but in the end found the above.
Roscommon 1857:No advance search with mother's name
Five Michael Fahey/Fahy found in Roscommon:
Michael Fahy, Parish of Kiltullagh, Townland Clogher Upper
tenant of Arthur O'Conor 12a Mary Fahy - House; 12b Thomas Fahy; 13a Michael, house and land, sharing 43.2._8
Roscommon: bmd website shows a James Fahy born 1826 with a father Michael. A copy of a parish birth has place,date,
fathers name, and mother's name with maiden name
No birth record for Michael.
Galway: (can enter a mother's name if you have one)
There are 29 Michael Fahy's, 4 x 1845; 5 x 1846; 3 x 1847; 2 x 1848; 1 x 1849; 3 x 1850
With a father Patrick, 1844, 1846, 1847, 1850, 1853, 1856www.labs.familysearch.org
Kate Garvey marriage registered July-Sept 1878, Glennamaddy
Civil Registration district #101253 Vol.4 Pg. 139
Kate Garvey marriage registered April-June, 1878, Drogheda
Civil Registration District #101253 Vol.2 Pg. 421
James Fahy marriage registered July-Sept 1878, Glennamaddy,
Galway #101253 Vol.4 Pg. 139
Patrick Faly, death registered Oct-Dec 1889, age 73 at death est birth year at 1816, Galway #101595 Vol.4 Pg. 165
Patrick Fahy death Oct-Dec 1910 age 77 at death est. birth year as 1833 #0101604 Vol.4 Pg. 164 Glennamaddy,Galway
I don't see any children with James Fahy and Kate Garvey as parents.
There are more records just look for Glenmaddy, Galway for the Civil Registration District.www.leitrim-Roscommon.com
has the 1901 Census for
Glenamaddy Townland, Parish of boyounagh, Ballymoe Barony,
Kate Fahy age 54, shop keeper and widow, Mary 22, Patrick 17 - shop assistant, Bridget 14, Mary Mannion servant and Henry Mulryan 25 labourer/not married
These can now been seen on www.nationalarchives.ie