Please note Caldwell Street was called Holland Street in 1881 – see here.
Kelly’s Directory 1881 tells us that at 19 Holland street lived Richard William Jones, an architect.
Expanding on the info taken from Kelly’s Directory and looking at the Census we find out a little more…
Well actually we don’t. The census records I have for this part of the street in 1881 are badly damaged and so I am unable to delve any further with Mr Jones. I have looked at the 1871 and 1891 Census, both of which show a different set of people living at number 19. Mr Jones will remain a mystery.