Prince Gleb Svyatoslavovich kills the sorcerer at the Novgorod Veche (Prince’s Court). 1898 Andrei Riabushkin (1861-1904)

The picture has something of this: wear, people, group, celebration, veil, woman, man, festival, child, dress, many, traditional, music, costume, performance, god.
Perhaps it’s a painting of a group of people standing in front of a crowd of men and women, all dressed in medieval clothing,.