Blazon
Original version: 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
Later modified version replaced a cross between crescents with the sword in pale point downwards. On a crowned helmet, five ostrich feathers.
Read more about this topic: Ostoja Coat Of Arms