When I began researching genealogy for men who died as part of the Franklin expedition, the first person I seriously looked into was steward William Gibson. From research articles written about him, I knew his family had moved to Australia, and I was able to trace a maternal line from his sister Charlotte Donaldson Gibson to a handful of living descendants in Australia and New Zealand. In the end, my research didn’t amount to anything – it turns out the study already had a DNA profile for a Gibson descendant – but it did give me experience in working with Australian and New Zealand records. I felt comfortable with them, and I wanted to stay within that domain if I could.
One of the things I found when looking into Charlotte Donaldson Gibson was that her obituary actually mentioned that she had a brother who died sailing with Sir John Franklin. Seeing that, it made me wonder if other obituaries might mention having relatives who died on the expedition. Australia and New Zealand both have great websites that archive historical newspapers, Trove and Papers Past, respectively, so I did a search in both and found the obituary of a Mary Isabella Smith (nee Young). It states she was the niece of the late John Sinclair of the Sir John Franklin expedition.
A complication: there is no John Sinclair of the Franklin expedition.