I am interested in this family too. Robert THURBAN was the first husband of my gt gt gt grandmother, Ann GILL. They were married on 15 September 1825 at St Stephens in Exeter.
So far I have traced two children from Robert and Ann's marriage:
Georgina Gill THURBAN, chr. 26 October 1829 at St Mary Arches, Exeter, and
James THURBAN, b. 1831? in Exeter.
I am actually descended from Ann and her second husband, Edward ELLIS, whom she married on 10 March 1834 at St Mary Arches, Exeter, following Robert's death. The birth certificate for one of their children [my gt gt grandfather, Edward ELLIS jr, b. 18 April 1839] gives his mother's name as "Ann ELLIS, late THURBAN, formerly GILL".
Edward ELLIS sr was born in Paul, Cornwall - although he and Ann lived in Exeter for a while, and also in London [where one of their sons, George, was born in 1842], before returning to West Cornwall sometime prior to the 1851 census. I'm guessing that the whole family [including stepchildren Georgina and James THURBAN] would be recorded on the 1841 census for London, although I haven't been able to prove this as yet.
Edward [Pender] ELLIS was a shoemaker - which is presumably why James THURBAN took up that profession. My gt gt grandfather, Edward ELLIS jr also ran a boot and shoe shop in Penzance in the 1870s and 1880s.
I have traced 5 children from James THURBAN's marriage to Catherine CHIRGWIN: Robert, Georgina Gill, James Henry, Annie Jane and William. The family was living at Keigwin Square, Mousehole in 1881 and 1891.
Hope this is of interest. I'd be keen to hear how it fits in with your own research.
Best wishes,
