The essay speaks about the rounds on 12 December - on the eve of St. Lucy's Day. It is based on the field research running in three villages (Svata Mari, Zdikovec and Zalesi), which are located in the southern part of the Bohemian Forest region, District of Prachatice, between 2007 and 2011. Simultaneously, it summarizes the reports about the rounds from the 1980s, i.e. from the period when the participating women did not present this tradition intentionally. We also took into account the information published at the beginning of the 20th century in journal 'Cesky lid'. Based on comparing the forms of rounds recorded in different time levels, the authors came to the hypothesis about a possible influence of Jesuit priest Vojtech Chanovsky (1581 - 1643) who was sent out to do missionary work in his native region and to improve the morals in spin evenings, inter alia. The presence of a Black Lucy who says the prayers and acts as a leading person, dominating over other White Lucys, and the accompanying song with a text of educational and moralistic character and a tune, which follows the song funds of the mentioned region, seem to be the typical features of the rounds in the entire area of the Bohemian Forests.