I was given this information some time back, but have not verified it
Mortimer John Mahoney
born C.1822
married Mary Mulchahy about 1847, Fornaght, Donoughmore, County Cork

Timothy Mahony baptised 17th June 1851 Fornaght Donoughmore
Parents Mortimer Mahony and Mary Mulchahy
I believe that Timothy came to Australia in 1862 aboard "Athene"