Based on the analysis of the diachronic data in the Czech National Corpus, the paper aims to specify some of the possible functions that the particle -ť expressed in Czech written texts in the 14t–18th centuries. The study combines a quantitative and a qualitative approach. The first part presents a quantitative analysis based on a smaller corpus that is balanced in terms of time and genre. As a result of this analysis, the functions manifested by the -ť particle in a balanced corpus are specified. In the second part of the study, the dative function of the particle -ť is analysed using a much larger, yet unbalanced corpus. The third part of the paper includes a qualitative analysis based on selected texts that verifies the existence of a dative function of the -ť particle.