From that I see that among the principal local seats in Islandeady, Cloonane was (in 1837) the residence of a J O'Malley Esq.
I wonder if my John O'Malley, born around 1831, was related in someway or named for him. 
I am also researching the O'Malley's of Cloonan(e). A Charles O'Malley (born c.1720) lived there, married an Alice Bourke, and is descended from Teige O'Malley c1540 as follows: Teige c1540 > Murrough c1570 > Dermot c1600 > Loughlin c1630 > Dermot c1660 > James c1690 > Charles c1720
It may be that Charles 1720 was a forbear of "J O'Malley, Esq." in 1837.
Any information on this line would be greatly appreciated.