This much I know: For more than four decades, Sigmund Freud and my great uncle, Siegmund Kornmehl, rented space in the same building in Vienna, 19 Berggasse. Siegmund Kornmehl had a storefront butcher business, while Sigmund Freud lived and practiced psychoanalysis upstairs. Beyond that, things get fuzzier. Was Martha Freud Really Affronted? I haven't yet found records to