Hello catmad
In case you haven't looked at any census returns, I've checked the 1841 to 1881 and he would seem to be on the '51, '61 and '71 in Liverpool. Same address on all 3, but not on the 1881 so probably died.
If you don't have access to any census, just let me know and I'll post the details (not all of it because he was the head of a school and all the pupils and teachers are there as well).
Mike