DNA of Roguski
The Roguski family show haplogroup R1a and also clearly relations to the Błociszewski of Ostoja family and further relations to Raczko. The DNA show that common ancestor with Błociszewski should live about 700 years ago - in time when the sign of Ostoja families was known butr just before formation of the Coat of arms. It can therefore be established that Roguski family is of Ostoja origin. Otherwise, Błociszewski family would have to change their sign from Adwaniec (Abdank) to Ostoja for non specific reasons since there are some DNA connections with persons that belong to the Adwaniec Clan.