Hi
Very interesting.
The census return for 1911 could be the one that applies to Mortimer.
According to Birth records we have established the year 1849 which would mean that he would have been 62 years for that census......so there is a discrepancy there.
However, the tradition of the time was to name the First son after the Grandfather, that would fit in in this case.
At the moment I don't know the names of any of Mortimer's siblings children, that would help me with the non family members present on the night. The only one perhaps is his brother John who had 2 daughters Mary Teresa and Ellen, plus one son John.
Thanks a million
Anna