St Casimir (Kazimierz) was a prince and the second-oldest son of Kazimierz Jagiellon and his wife Elizabeth of Austria. Belief in his holiness had already spread in the 15th century, which led to his canonization in 1604. He was particularly venerated at Vilnius Cathedral which was his burial site. His worship greatly contributed to the integration of inhabitants of the vast area of the Commonwealth of Two Nations. St Kazimierz was depicted in royal attire, most often with a lily in his hand as a symbol of purity and chastity.
St Hyacinth was the first Polish Dominican and a disciple of St Dominic.. Numerous miracles were seen by the grave of Brother Hyacinth who died in 1257, at the Cracow Dominican Church and his worship grew over the centuries, which led to his canonization in Rome in 1594. He is depicted in Dominican habit, usually with Monstrance and the figure of Our Lady with Child in his hand.
We are all well aware that to enter this Cathedral can not be without emotion. More I say, you can not enter it without the internal tremor, without fear because it contains in it - as in almost no Cathedral of the world - the enormous size, which speaks to us in all our history, our entire past.cardinal Karol Wojtyla