The medieval saint Francis of Assisi left behind a great spiritual and literary heritage in European culture and beyond. His successors continued the tradition that the saint-writer began in central Italy, which seems to have no end even today. This work aimed to include a part of the corpus of poems by one of the most widely read and well-known representatives of Polish Franciscanism, the priest and writer Jan Twardowski. The self-proclaimed Jan of Biedronki has long since entered school textbooks, into the hearts of children, young people, and readers of all ages. The first part of this paper provides a brief overview of the biography and work of St. Francis of Assisi and the most important characteristics of his spiritual heritage and philosophy. It will be summarized the influence of the Italian saint on European and especially on Polish literature and culture. It will also be defined and presented basic approach to lyrical poetry. The analysis of the poems is preceded by biography and a concise bibliography of Jan Twardowski as well as the most important characteristics of his poetry. For this paper were analyzed poems from the collection Nie przyszedłem pana nawracać edited in 2009 by Aleksandra Iwanowska. In the analyzed poems, special emphasis is placed on the motifs typical of Franciscan poetry which is proved in the conclusion. The aim of this paper was to discover what motives of Franciscanism are present in the mentioned corpus, and to bring this excellent Polish writer closer to our speaking area.