Following World War I, the practice of establishing “Gypsy kings” resurfaced, this time a self-appointed monarchy, established by the Kwiek family, from the Kalderash group. In 1930, Michał Kwiek proclaimed he was “the king of all Gypsies”, and in 1937, Janusz Kwiek, was crowned “the king of Gypsies” by priests of the Orthodox Church and attended by government officials, during a ceremony held at the Polish Army Stadium in Warsaw.

The program of the coronation ceremony that took place in 1937 had the following events:
1. Intorduction of 30 Romani senators who were to chose from 5 candidates, all of which were from the same family - Kwiek
2. Introduction of the candidates.
3. The voting
4. Blessing of the oyal crown by the Orthodox clergy
5. Submitting an oath by the subjects to the king
6. Coronation done by the Archbishop
7. A performance of the Roma Choir
8. The subjects offer flowers, gold or other gifts to the king
9. The king is given bread and salt by the senators
10 The senate hands the insignia to the king
11 After the coronation ends, the king thanks the senate and his subjects
12. The king thanks the authorities of Poland as well as the gathered guests
13. The king gives a speech in Romanes to the gathered, which is directly translated to Polish
14. Various Roma performances.

The ceremony had been transmitted by the Polish Public Radio as well as international radios.