I thought the same thing when considering regging certain historical groups, events, or aboriginal groups of North America that no longer exist. Although the words may be right, it will not make money. As alien51 said, school children searching.
Do you have enough passion to write an extensive website full of original content? Otherwise, I would stay away. My mistake might save you a few bucks. Never assume that since its a famous name or short or unique that someone will come to buy it, especially in this economy.