I see now that what I wrote was a bit ambiguous - even confused myself by the looks of things.

The 2nd letter of Patrick's surname seems a very clear E, which is why I thought Lewin, not Lawson. In fact Ancestry indexes him as Sewin, but the initial compares to that of Labourer etc. The fact that the enumerator's Ws look like Ns makes it more posssible for Catherine & Ellen's surnames to be Lawson even though they look dissimilar. Still doesn't explain why Patrick's wife is Lewin.

I would say that Elizabeth is definitely Moffat, given the M of Mar(ried).