Kerry,
Kinally is not a common name but it did exist the Dunmore area in 1855.
Census names are frequently misspelled, probably by the census takers or it could be that it being a British census, the Irish wouldn't give their right name.
There are also variations of Kinally such as Kinealy and Kinnealy both much more common.
I took a quick look in
www.lalley.com but did not see a Benjamin
Anyway, good luck!