Wenceslaus of Płock
Wenceslaus( Wańko) of Płock( Masovian dialect:" Wańko Puocky"; 1293/97 – 23 May 1336), was a Polish prince member of the House of Piast, Duke of Płock since 1313 and vassal of Bohemia from 1329.
He was the third son of Bolesław II of Płock but the only born from his second marriage with Kunigunde, daughter of King Ottakar II of Bohemia.
He was probably named after his maternal uncle, King Wenceslaus II of Bohemia.
Mieszko Bolesławowic
Mieszko Bolesławowic( c. 1069–1089) was the only son of Bolesław II the Generous, King of Poland.
Mieszko was Prince of Cracow from 1086 until his death in 1089.
Bolesław II of Niemodlin
Bolesław II of Niemodlin (1326/35 – by 25 June 1368), was a Duke of Niemodlin since 1365 until his death (with his brothers as co-rulers).
He was the eldest son of Bolesław the Elder, Duke of Niemodlin, by his wife Euphemia, daughter of Henry VI
the Good, Duke of Wrocław.
Nicholas II of Niemodlin
Nicholas II of Niemodlin( – 27 June 1497), was a Duke of Opole- Brzeg- Strzelce- Niemodlin in 1476( as co-ruler of his father) and sole Duke of Niemodlin from 1476 until his death.
He was the third son of Duke Nicholas I of Opole by his wife Agnes, daughter of Duke Louis II of Brzeg.
Bolesław II Rogatka
Bolesław II Rogatka or Bolesław II the Horned, known also as Bolesław II the Bald,( c. 1220/5 – 26/31 December 1278), a member of the Silesian Piasts, was High Duke of Poland briefly in 1241 and Duke of Silesia at Wrocław from 1241 until 1248, when the duchy was divided between him and his brothers.
After the partition, he ruled the Silesian Duchy of Legnica until his death.
The second Mongol raid against Poland, led by Nogai Khan, occurred during his reign.
Bolesław the Elder
Bolesław the Elder , was a Silesian Duke.
He was the ruling Duke of Wieluń during 1313–1326, Duke of Niemodlin from 1313 and ruler over Prudnik from 1336 until his death.
He was the eldest son of Duke Bolko I of Opole by his wife Agnes, probably a daughter of Margrave Otto III of Brandenburg.
Bolesław was nicknamed "the Elder" or "First-bornPierworodny") in order to distinguish him from his younger brother, who, for unknown reasons, was also named Bolesław (Bolko).
Wenceslaus of Niemodlin
Wenceslaus of Niemodlin( 1336/46 – June 1369) was a Duke of Niemodlin since 1365 until his death( with his brothers as co-rulers), and Duke of Gliwice from 1364.
He was the second son of Bolesław the Elder, Duke of Niemodlin, by his wife Euphemia, daughter of Henry VI the Good, Duke of Wrocław.
Trojden I, Duke of Masovia
Trojden I( 1284/86 – 13 March 1341), was a Polish prince member of the House of Piast, Duke of Czersk since 1310, ruler over Warsaw and Liw since 1313, regent of Płock during 1336 – 1340.
He was the second son of Bolesław II of Płock and his first wife Gaudemantė( Sophia), the daughter of Grand Duke Traidenis of Lithuania.
He was named after his maternal grandfather.
Henry of Niemodlin
Henry of Niemodlin( after 1345 – 14 September 1382), was a Duke of Niemodlin since 1365 until his death( with his brothers as co-rulers until 1369).
He was the third and youngest son of Bolesław the Elder, Duke of Niemodlin, by his wife Euphemia, daughter of Henry VI the Good, Duke of Wrocław.
Bolesław II of Masovia
Bolesław II of Masovia or Bolesław II of Płock( pl:" Bolesław II mazowiecki( płocki)"; ca. 1253/58 – 20 April 1313), was a Polish prince member of the House of Piast, Duke of Masovia during 1262- 1275 jointly with his brother, since 1275 sole ruler over Płock, since 1294 ruler over all Masovia and Duke of Kraków and Sandomierz during 1288- 1289.
In 1310 he gave to his sons the districts of Warsaw and Czersk.

Question: Who is the paternal grandfather of Bolesław Ii Of Niemodlin?
Answer: Bolko I of Opole