Ostoja is a Polish coat of arms that probably originated from Sarmatian Tamga and refer to Royal Sarmatians using Draco standard. Following the end of the Roman Empire, in the Middle Ages it was used by Ostoja family in Lesser Poland and later also in Kujavia, Mazowsze and Greater Poland. It is a coat of arms of noble families that fought in the same military unit using battle cry Hostoja or Ostoja, and that applied their ancient heritage on the Coat of Arms, forming a Clan of knights. Later, when the Clan expanded their territory to Pomerania, Prussia, Slovakia, Hungary and Romania they also adopted a few noble families of Ruthenian origin that in 14-15th century settled down in Lithuania, Belarus and Ukraine, finally turning into the Clan of Ostoja. As different lines of the clan formed surnames after their properties and adding the adoptions, Ostoja was also recognized as CoA of several families that was not necessary connected to the original Clan, forming Heraldic clan. History and notable members Blazon Original version: the coat of arms of the medieval version differed significantly from the generalized form in later times. The following reconstruction appearance comes from Josef Szymanski: Gules, between an increscent and a decrescent a cross in pale point downwards, all Or. On a helmet a dragon Sable, exhaling fire Gules, on two crescents pointing up, Or. Mantling Sable, lined Or Modern version from the 17th century replaced a cross between crescents with the sword in pale point downwards. On a crowned helmet, five ostrich feathers. The last image is of the seal of Dobieslaw de Koszyce from 1381 that is identical to an early sign found on the entry of the church in Wysocice of Nicolaus Ostoja de Sciborzyce (Lesser Poland) from about 1232. Those coat of arms as below are of noble families and linked en masse to Ostoja simply because the moon or the sword in the shield. The list of imaginary Ostoja coats of arms might be longer than here presented. There are also Russian families that were ennobled and given the coat of arms that also looked like Ostoja during the partition time and that some call Ostoja. It is also possible that coats of arms were painted with error during the nobility verification process in the time of partition. Below, CoA from the left: Błyszczanowicz - ancient family noted in 1497, error in