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.
Bernard the Lightsome
Bernard the Lightsome( also known as of Lwówek)( ca. 1253/57 – 25 April 1286) was a Duke of Lwówek( Löwenberg) since 1278( with his brother until 1281) and Jawor( Jauer) during 1278 – 1281( as a co-ruler of his brother).
He was the third son of Bolesław II the Bald, Duke of Legnica by his first wife Hedwig, daughter of Henry I, Count of Anhalt.
It is not known when exactly he was born but had to happen before 1258, because seven years later he was sent to Wroclaw by his father with the" Tithe" to the Bishop Thomas.
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.
Bolesław II the Generous
Bolesław II the Generous, also known as the Bold and the Cruel ("ŚmiałyOkrutny";
c. 1042 – 2 or 3 April 1081 or 1082), was Duke of Poland from 1058 to 1076 and third King of Poland from 1076 to 1079.
He was the eldest son of
Duke Casimir I the Restorer and Maria Dobroniega of Kiev.
Bolesław II is considered to have been one of the most capable of the Piast rulers.
In 1075 he re-established the Archdiocese of Gniezno (consecrated in 1064) and founded the Diocese of Płock.
He established Benedictine monasteries in Mogilno, Lubin and Wrocław.
Bolesław II was also the first Polish monarch to produce his own coinage in quantity great enough to replace the foreign coins prevalent in the country during the reigns of the first Piast kings.
He established royal mints in Kraków and Wrocław and reformed the coinage, which brought considerable revenue into the royal coffers.
All these efforts had an enormous influence on the economic and cultural development of the country.
According to the chronicler Gallus Anonymus, during his reign he was called "largusthe Generous" in English, "Szczodry" in Polish) as he founded many churches and monasteries throughout Poland.
The nickname "the BoldŚmiały") was only given to Bolesław II for the first time in the later "Chronicle of the Polish kings", although it was considered by historiography of the 19th and 20th centuries as a contemporary nickname.
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.
Casimir I the Restorer
Casimir I the Restorer (b. Kraków, 25 July 1016 – d. Poznań, 28 November 1058), was Duke of Poland of the Piast dynasty and the "de jure" monarch of the entire country from 1034 until his death.
He was the only son of Mieszko II Lambert by his wife Richeza, daughter of Count Palatine Ezzo of Lotharingia (of the Ezzonids) and granddaughter of Emperor Otto II.
Casimir is known as "the Restorer" because he managed to reunite all parts of the Polish Kingdom after a period of turmoil.
He reinstated Masovia, Silesia and Pomerania into his realm.
However, he failed to crown himself King of Poland, mainly because of internal and external threats to his rule.
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.
Eikichi Yazawa
Yoko Yazawa of The Generous is his daughter.
Henry V, Duke of Legnica
Henry V the Fat( – 22 February 1296) was a Duke of Jawor( Jauer) from 1273, of Legnica( Liegnitz) from 1278, and Duke of Wrocław( Breslau) from 1290.
He was the eldest son of Bolesław II the Bald, Duke of Legnica by his first wife, Hedwig, daughter of Henry I, Count of Anhalt.

Question: Where was the place of death of Bolesław Ii The Generous's father?
Answer: Poznań