Supposedly he discovered the structure of benzene after dreaming of a snake eating its own tail. Kekule's theory came after Loschmidt's proposed structures which were published in 1862. The reason Loschmidt's structure was not recognised was because there was no empirical proof.
The title "von Stradonitz" is due to Kekule's enobling by Emperor William II. This enobling allowed Kekule to add the title in reference to Ancient possessions of Kekule's family in Stradonice.