Duke of Masovia
Duke of Masovia (Polish: Książę Mazowsza) was a title borne by the sons and descendants of the Polish Duke Bolesław III Wrymouth.[1] In accordance with the last will and testament of Bolesław, upon his death his lands were divided into four to five hereditary provinces distributed among his sons, and a royal province of Kraków reserved for the eldest, who was to be High Duke of all Poland.Also take note that some of the dates are merely approximate and the ownership of certain lands might be disputed.Finally, this table does not include lands ruled by dukes of other parts of partitioned Poland or Wenceslaus II and Wenceslaus III.The Duchy went through various border changes in the coming years, sometimes losing and sometimes gaining territory.
PolishBolesław III Wrymouthlast will and testamentKrakówHigh Duke of all Polandfragmentation of PolandDuchy of MasoviaPolandWenceslaus IIWenceslaus IIIPiast dynastyDuchy ofKuyaviaSalomea of BergEhingenHenry, Count of BergŁęczycaBoleslaus III of PolandBoleslaus (IV) the CurlyViacheslava Vsevolodovna of NovgorodCasimir II of PolandLeszek IBoleslaus IV of PolandCasimir (II) the JustHelen of ZnojmoLeszek II the WhiteGrimislava Ingvarevna of LutskGąsawaConrad IAgafia Yaroslavna of PeremyshlBoleslaus ICasimir IDuchy of KuyaviaConstance of WrocławWrocławEuphrosyne of OpoleInowrocławSiemowit ICzerskBoleslaus, Duke of Greater PolandConrad IIDuchy of CzerskHedwig of LegnicaBoleslaus IIDuchy of PłockGaudemantė Sophia of LithuaniaKunigunde of BohemiaLeszek I the BlackBrześć KujawskiDuchy of ŁęczycaAgrippine Rostislavna of HalychKing of PolandSiemomysłDuchy of InowrocławLadislaus I the Elbow-highDuchy of Brześć KujawskiKingdom of PolandHedwig of KaliszCasimir IISiemowitDuchy of DobrzyńAnastasia Lvovna of Galicia–VolhyniaLeszek IIPremislausWyszogródInowroclawSieradzCasimir IIIDuchy of GniewkówLadislaus I, Duke of KuyaviaLeszek IIIDobrzyń nad WisłąLadislaus II the HunchbackBoleslausSiemowit IIDuchy of RawaSochaczewGalicia-VolhyniaTrojden IDuchy of WarsawMaria Yurievna of Galicia-VolhyniaWenceslausPłockSiemowit II, Duke of RawaTrojden I, Duke of WarsawBoleslaus IIIMělníkSiemowit IIIWarsawLadislaus III the WhiteStrasbourgCasimir III the GreatJanusz I the ElderDanutė Anna of LithuaniaPodlasieTeutonic OrderZawkrzePłońskSiemowit IV the YoungerAlexandra of LithuaniaGostyninSiemowit VSiemowit IVRawa MazowieckaTurobinMiączynTrojden IILadislaus IBoleslaus IVJanusz IBarbara Olelkovna of Slutsk-KapyOpinogóra GórnaJohn II, Duke of RacibórzConrad V, Duke of OleśnicaMszczonówSiemowit VILadislaus IIConrad III the RedAnna RadziwiłłOsieckPułtuskBoleslaus VŁomżaJanusz IICiechanówStanisławConrad III