This cake is like a cross between French and Italian cake. Instead of using french ladyfinger biscuits, they use Italian Savoiradi. Actually, this whole cake kind of has a tiramisu feeling to it, because the center of this cake is rum-soaked savoiradi biscuits. And to top it all, it is called the "Esterhazy" cake.
To those familiar with classical music, you should know that "Esterhazy" comes from Caroline Esterhazy, who is Franz Schubert's lover. She's German. In fact, the Piece "For Esterhazy" is one of the first piano pieces I learned as a kid.
So this is like a tri-countries cake. France, Italy, and Germany. Genious!!