I have just discovered your message re- the Royal Canadian Rifles. Has anyone given you any information yet? I have a little and can send you what I have if you would like. You are welcome to email me at... firstname.lastname@example.org
The RCR was disbanded in 1870 and soldiers could either take up land in Canada or return to UK. My Thomas Unwin returned with his family to UK and then emigrated to NZ in 1872. One Company was based at Kingston,Ontario.