Could well be the familes, my father said they had a small holding. Also I have just checked the 1871 census and there is a Thomas and Catherine Cubbon on the same census sheet for Malew Rd as Margaret and the children. (Thomas' family)
My next step is the checking of wills. Thomas jnr may have had one as there's a Thomas Cubbon's (1873-the year Thomas died) will mentioned on Brian Lawson's site

Thanks, yet again.

Ann