It appears that openings are named after almost any country or city in the world. Spanish opening, Italian game, French defense, Hungarian gambit, London system and so on. 

Because I am from Sweden I want to learn and play an opening related to Sweden. But to my surprise and dismay I haven't found a single one named after a Swedish location or Swedish chess player (Scandinavian Defense doesn't count because it is for the whole of Scandinavia).

Can you help me find one? The more closely related to Sweden the better.