Principality of Taured.
A man, in 1954, appeared in Tokyo claiming to come from an European country called Taured.
When the Tokyo airport officers claimed that Taured didn't exist, he showed them a passport from that country.
The passport showed visas from previous travels in Japan, and he claimed to have a reservation in a hotel in Tokyo, but the hotel denied to have such reservation.
He have also some travel-cheques, but the bank emitting them was inexistent.
To add mystery to mystery, the next day he banished from the hotel room where he was closed wating for furthern investigation.
The traveller come from from another timeline, one where the Albigenses were more successeful.
Altrought, in the end, France was able to recover much of the southern part of the country, but the zones around Pyrenees and Catalonia joined in an allience called Taured.
Taured is a principality, ruled by the house of Urgell, but nowdays is a parlamentary monarchy with strong economics ties with Japan and other asian countries and a defiant neutality.
In religious matters, the Albigenses joined the reformation but never instituited discrimination for catholics-
In 18th century the parliament repealed the laws forbbiding the prince to adhere to catholicism.
*i'll use Taured also for my setting Earth Arcana-