sure why the Cain story doesn t belong in a biography article If it s notable then it belongs somewhere Where else would you suggest It s either got to go in 1 it s own article 2 this article or 3 the article about Cain and Abel Of those three options I think this one s clearly the most appropriate There s nothing that says certain notable anecdotes can t be included in a biographical article On the contrary is that not where they belong I m not