Thanks Brian. I have now listed all the Ellisons on the 1841 census and linked all family members together. There are still some stragglers whom I cannot place. However the family I am interested in is Thomas Ellison and Jane Corlett. They had 8 children one of which is Thomas Ellison (who was married to Margaret Cannell) my husband's gr gr grandfather. Whilst looking at this detail two interesting points came to light, the first was that my husband's gr gr grandfather was related to Thomas P Ellison who became I believe secretary of the Isle of Man shipping company and the other fact which will be of more interest to you is that there are an over abundance of surnames in the Isle of Man beginning with the letter C.
Good luck with your treatment - never give up, take all they throw at you and keep drinking the beer!! it helps.