Modliszewski family with Ostoja coat of arms
= Modliszewski Coat of Arms Ostoja = The Modliszewski family - a Polish noble family with the Ostoja coat of arms, belonging to the heraldic Clan Ostoja (Moscics). The Modliszewski took their surname from the village of Modliszewo Kościelne (sometimes Modliszewo Cyrkiewne, Modliszewo Lesser, Modliszewo Małe or Modliszewko, just like today), located in the former in the Kalisz voivodeship. Modliszewo Kościelne bordered with , from which the Modliszewskis of the Dryja coat of arms (they were of common origin with the Mileski family from Mileszyn) and the Modliszewskis of the Topór coat of arms (who  were a branch of the Kołybskis from Kołybek). The Modliszewskis of the Ostoja coat of arms were mentioned by Kasper Niesiecki in "Polish Herbarz". Family surname. The surname of the Modliszewski family of the Ostoja CoA is the nickname of Sitek, Sitko, Sittko, Sythek. According to in Modliszewo Kościelny was also inherited by the Modliszewskis who used the surname of Sobiejuch of an unknown coat of arms. The oldest source certificates concerning the family. Listed below are selected source testimonials concerning the Modliszewski of the Ostoja CoA and the nest village of Modliszewo Kościelny until the beginning of the 16th  century. The estates belonging to the family. Listed below are the most important lands belonging to the Modliszewski of the Ostoja CoA. Modliszewo Kościelne (like Modliszewko), Wierzejcze (like ), Dębłowo, Wierzbocice,