Thanks again Sue and Bruce,
According to the 1901 Census, Robert and Hannnah Smith (Corlett) had had 3 children between 1881/2 and 1888/9, all born in Liverpool. This is why I have suggested that Hannah and Robert Smith married in c.1880, but it could be 81 or even 82.
Any details of Hannah b. 1859/60 from the 1861 or 1871 census would be gratefully received.
Thanks Ian