it was not in 1866 in Avenal in Victoria, that was his grandson Joh Kelly born in 1821. You can check the victorian birth deaths and marriages index see also the following discussion over on Reddit genealogy
https://www.reddit.com/r/Genealogy/comments/17unil0/am_i_related_to...
Someone got confused and added the wrong place and date of death for John Kelly born in 1775, they added the place and date of death for his grandson John Kelly born in 1821 and died in 1866 in Victoria, probably by accident.