Surely to qualify as a "Victorian", you have to have been a subject of the monarch of the day. Therefore there are only 2 - the UK's Ethel Lang, and Violet Brown from Jamaica, who is a little older. Hopefully Ethel outlives the Jamaican lady, only seen appropriate that the last Victorian alive is from Britain!
How very imperialistic of you! I am going to cheer on the colonies now because of that. Hang in there, Violet!