If you are still researching this line, I have information about the Gibson family going back to the beginning of the 18th century. Thomas Wheatley Gibson's father, Lt Colonel John Thomas Gibson, was the son of East India Company broker Bowes John Gibson, who was the younger brother of my 5 x great grandmother Elizabeth Gibson.
I've written about the Gibsons at my blog, Past Lives. Follow the link below and look under the 'Gibson' category, or use the search box. Happy to be contacted, too:
mprobb.wordpress.com
Best wishes
Martin Robb
PS Thank you for the information about Thomas Wheatley Gibson's family, which I've found very helpful. Did you know the family was living in Jersey at the time of the 1861 census?