Professor Karol Górski responds to the arguments presented by S. Szczur regarding the character of Zbigniew. The author refers to the methodology of Wł. Semikowicz, who uses the name criterion for the period until the mid-13th century. Górski claims that this method, enriched with elements of demography and sociology, is still used by family researchers in Poland. He rejects the objection that the lack of records earlier than the 17th century is an error, citing criticism of positivism, which often rejected later sources. He indicates that Poles were admitted to the Cistercian monks as early as the 13th century, which is consistent with the information from Philip of Łęczna. Therefore, nationality disputes in the 14th century do not indicate the situation in the 13th century. Górski also disputes Szczur's thesis that Zbigniew's name was attached to the name of the martyr Paul by Henriquez, arguing that a foreigner could not invent a Polish name. The matter remains open, and the origin of the name in the sources remains to be determined further.
