There is only one James Gray in the 1828 TAB but two in the 1831 Census. I have made this the man that appears in both though it could easily have been the one with all the children.
The 1828 TAB gives the following Grays in the TAB in Camus:
Samuel Gray 4.3.21
David Gray Jnr 4.1.30
Joseph Gray 10.3.12
David Gray Snr 13.1.3
James Gray 6.0.19
Grays in 1831 Census in Macosquin
F/n S/n T'land Hse # M F
Samuel Gray Camus 15 1 1
Susan Gray Camus 16 1 2
James Gray Camus 17 1 4
David Gray Camus 21 1 2
Joseph Gray Camus 23 3 4
James Gray Camus 38 2 4
Joseph Gray Glenhall 3 5 3
Joseph Gray Glenlary 17 4 4
James Gray Glenlary 24 5 4
John Gray B'laggin 13 2 2
There is no trace of this man in the Griffiths Valuation of circa 1855.
A scenario for the original Grays of Camus:
Once upon a time there were six bros acousins called Gray who lived happily never after in a clutch of hovels in Camus, Macosquin. There was David, James, Joseph, Samuel, William and James all born in the 1790s/1810s. It is of course unclear which were bros and which were cousins. As there are TWO proven Jameses, the six can not all be bros. This means two fathers (at least), who may have been bros. The candidates are David, James and John, presumably born circa 1760/70. And of course, since we are staring through a glass darkly, wnad we know that everyone had big familes back then just as 100 years later when the glass is clearer, then these three are just the tip of the icebeg and there were probaly 10 or twenty Gray bros and cousins in the year 1800 in Camus, or indeed in the year 1760. Now of course, time did not begin in 1760, so even these men may also have been cousins rather than brothers and we need to go back yet another generation to find the original GRAY.... Or another.... Or another.........