Bolesław IV the Curly
Derszlaw was cup-bearer for King Boleslaw Wry-mouth in 1114. Bolesław IV the Curly granted title to the villages of Jakuszewice and Kobelniki to Derszlaw's sons Wojciech and Derszlaw, of whom Wojciech was the Sandomierz standard-bearer. Paprocki cites a fragment of his in "O herbach", but the long stretch of time between them and their father, 166 years, indicates that they were not the sons of Derszlaw the cup-bearer. Paprocki cites a monastery grant of privilege given in 1199 for Borzywoj and Derszlaw Jastrzebczyk, heirs to Jakuszowice. He also includes Piotr, son of Wojciech, Sandomierz standard-bearer.