Many thanks, Shaun, for finding this. But what a Horlicks the enumerator made of it.
So, "Shows" is Thomas for Robert (b. Oswestry) - again an assistant overseer - and Catherine (b. Llanymynech, Shropshire, not Llwyngwril, which is in Gwynedd)
Then, another couple of puzzles. The enumerator adds "Eary" Edwards, as a visitor but I do not recognise this forename. And, then, John Robert "Edwards" is listed as Robert's son, age 5. Robert and Catherine married the year before in 1850. John Robert Thomas was baptised 3 Jan 1851 but died 15 Jan 1852. So, would have been 1.
Any help/corroboration much appreciated.
Best
John