Thanks to all for your inputs.

My initial reading was:
Schedule 218
Catherine Lawson
Elizabeth Moffat

219
Patrick Lawson
Ellen Lawson

I had tentatively identified this couple as Patrick & Eleanor Corlett.

Today I had a look at the IoM copy which is, of course, a contemporaneous transcription.

The only difference is that it gives Patrick Lewin

There is no other Patrick Lawson in the 1861 census.
There is no Patrick Lewin in the 1851 or 1871 censuses.

It is not conclusive, but I'm sticking with my original reading and identification.

Once again, thanks to all for your help