O&S (meme) - job descriptions [1881]

Some very interesting "job descriptions" from the 1881 census, some of these self-written descriptions seem to be deliberately humorous to modern eyes.

Of those listed, I recognise two !
A knocker-up went around banging on bedroom windows, to wake people for their "early shift" - I know about it from reading about careers on the railways. It still existed in the years before the Somerset & Dorset was closed.
Random Waller - probably refers to dry stone walling, or building a rubble walls, ie those without the distinct courses visible in brickwork.