I have somewhere from a story their grandma told my sons that he became an Inspector of Schools, so that fits in.
We have a lot of stories and hearsay, but no true facts.
From Charles MILLS death cert I have the following:
Offspring. Charles 55, Richard 52, Reuben 50, Elsie dec, Isabella dec, Grace 44, James 41, Gordon dec, Ivy dec.
In Australia 71 years from Donoughmore, County Down.