Patrick is the first son of Thomas FG & Bridget Connelly would of been named after his father or father's father. So I'm guessing that Thomas's father would be named Patrick.
Driving Map: The only one of the above Thomas Fitzgerald's from the Barony of Bear, is Kilcatherine a Parish and a Townland in the Union of Castletown. Castletown is the Union.
Clear Island is in the Union of Skibbereen. Both Castletown and Skibbereen have peninsula's that reach out to the West. I would say a third peninsula of Dingle reaches further to the West that either of the other two.
Ballyieragh is a townland in the Union of Skibbereen, Clear Island Parish, in the Carbery West area.www.familysearch.org
Thomas FG death registered Skibbereen Jan-March 1910 age 48
birth 1862 based on age given at death. LDS #Vol.5 Pg. 366
#4201708 * (if born in 1862 this would be a parish record
so you can disregard those birth's listed for Thomas above.
Thomas FG death registered Oct-Dec 1908 age 35
birth year 1873 based on age given at death LDS Pg.29 #4201708
Your Thomas was *40 in 1901!