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The subscription site Roots Ireland has seven baptismal records where the parents were Patt Hickey and Ally/Elitia Keating. Michael 1828 James 1830 Patt 1832 William 1834 John 1836 Jukia 1838 Catherine 1841
NOTE the 1832 record had the mother as Elitia
I did not locate the marriage record.
The 1853 Griffiths Valuation head of household listing for Killabban civil parish showed an Alice Hickey in Oldcourt which is an alternate name for Ballylynan https://www.failteromhat.com/griffiths/laois/killabban.htm Likely Patt Hickey had died pre-1853.