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The townland is Derryduff.
The only Ross family in the 1901 census for Derryduff was a William Ross family perhaps a brother of George?
I found his civil marriage record in 1897 to Mary Kingston in the Drimolegaue Church of Ireland parish. The father of William was Edward
Here is the 1911 census for William Ross. http://census.nationalarchives.ie/pages/1911/Cork/Milane/Derryduff/410774/
The records for the Church of Ireland parish in Fanlobbus were destroyed in the 1922 Public Records Office fire.
The 1852 Griffiths Valuation head of household listing shows an Edmund Ross in Derryduff townland likely the father of William. http://www.failteromhat.com/griffiths/cork/fanlobbus.htm