I am not sure if still around but there is a C. Mastin d 1829 age 56 years buried at Cameron Cemetery in Hallowell Twp.
His mate is Perlina(close to Caroline) who died 1864 at age 77
I believe this is the Cornelius in the 1808 Hallowell Twp census in the end and was a son of Aaron and Rebecca.
THere is a picture of the grave. I have been to the site recently. Hard to find and overgrown but the picture on the web is mint.
http://canadianheadstones.com/on/view.php?id=53038