My pleasure Cheryl! Good to be of use.
I am unable to give info on living persons on the site but can direct you to the Irish phone book: http://www.118.ie/ (if that doesn't work it's 11850 Directory Enquiries; there are 20 Powers in Limerick but I didn't see Galbally & Aherglow mentioned.
Sorry to disappoint you but I'm in Oz too - Safety Beach north of Coffs Harbour.
Been to Ireland 4 times - ancestors are from Achill Mayo & Galway.
Here's a bit more to keep you going; the Tithe Applotments (free at http://titheapplotmentbooks.nationalarchives.ie/) have 5 Maurice Power records 1827-34:
PowerMauriceBallynacloughBallynacloghLimerick1832
PowerMauriceBalbyshinabuoyKilquaneLimerick1834
PowerMauriceFeohanaghMahoonaghLimerick1833
PowerMauriceGarvary and ClugginTuoghclugginLimerick1827
PowerMauriceGany ParkTuoghclugginLimerick1827
You'll need to do some research to find whether any is in / near Galbally / Aherlow but of course he could have moved too!
No luck in the early Irish Censuses (1821, 31, 41 or 51)
Griffiths Valuation has 6 Maurice Powers in Limerick around 1850 - the record shows address.
There are also 3 Patrick Powers in Galbally 1851 (free at http://www.askaboutireland.ie/
You also might want to have a look at http://registers.nli.ie/; just enter the parish names and see if there are any there but it's tough going as it's reading copied film.
Here's a POSSIBLE death record:
Name:MauricePower
Date of Death:26-Aug-1870
Age:83
Parish / District:GREANAddress:Garrypraski
County:Co. LimerickStatus:Widower (Male)
Denomination:Civil RecordOccupation:FARMER
Sex:Male
Graveyard
InformantGraveyard:
Relationship:Not RecordedParish:
Name:Patrick PowerCounty:
Address:As Above (Present)
No luck findin Jane / Jenny however
Col