Elisabeth of Kalisz
Elisabeth of Kalisz( 1263 – 28 September 1304) was the eldest child of Bolesław the Pious and his wife, Saint Jolenta of Poland.
Her younger sister was Jadwiga of Greater Poland.
Jarosław, Duke of Opole
Jarosław of Opole( aft. 1143 – 22 March 1201) was a Duke Opole from 1173 and Bishop of Wrocław from 1198 until his death.
He was the oldest son of Bolesław I the Tall, by his first wife Zvenislava, daughter of Vsevolod II Olgovich, Grand Prince of Kiev.
His Russian name was given by his mother.
Emnilda
Emnilda( – 1017), was a Slavic princess and Duchess of the Polans from 992 by her marriage with the Piast ruler Bolesław I the Brave.
Ali Rahuma
Ali Khalifa Rahuma( born May 16, 1982) is a Libyan football midfielder who's nationality is Libyan.
He currently plays for Al- Ittihad, and is a member of the Libya national football team.
Bolesław V the Chaste
Bolesław V the Chaste( 21 June 1226 – 7 December 1279) was the Duke of Sandomierz in Lesser Poland from 1232 and High Duke of Poland from 1243 until his death, as the last male representative of the Lesser Poland branch of Piasts.
Bolesław I the Tall
Bolesław I the Tall  (b. 1127 – d. Leśnica (now part of Wrocław), 7 or 8 December 1201) was Duke of Wroclaw from 1163 until his death in 1201.
He was the eldest son of Władysław II the Exile by his wife Agnes of Babenberg, daughter of Margrave Leopold III of Austria and half-sister of King Conrad III of Germany.
Otto Bolesławowic
Otto Bolesławowic( 1000 – 1033) was a Polish prince and member of the House of Piast.
He was the third son of Bolesław I the Brave but the second born from his third marriage with Emnilda, daughter of Dobromir, a Slavic prince of Lusatia.
Aneka Kerr
Aneka Kerr( born 1 March 1981 in Rangiora) is a basketball player for New Zealand.
At the 2006 Commonwealth Games she won a silver medal as part of the Tall Ferns New Zealand women's basketball team.
Kerr represented New Zealand and the Tall Ferns at the 2004 and 2008 Summer Olympics.
Kerr also played in the Women's National Basketball League in Australia with teams from Melbourne, Townsville, Dandenong and Christchurch.
Lisa Wallbutton
Lisa Wallbutton( born 14 January 1986 in Henderson, New Zealand) is a basketball player for New Zealand.
She won Outstanding Young Player in the 2004 and 2005 seasons, and MVP at the 2005 NZ U23 tournament.
She debuted for the Tall Ferns( New Zealand women's basketball team) in 2005 at the William Jones Cup in Taiwan.
At the 2006 Commonwealth Games she won a silver medal as part of the Tall Ferns.
Wallbutton has also represented New Zealand at the 2008 Beijing Olympics.
“ My fondest memory of my time with the Tall Ferns will always be competing at the Beijing Olympics.
For me that was a childhood dream come true and an opportunity to compete at the highest level against the very best players in the world at the time. ”
In 2010 she played for the Albury Wodonga Bandits in the SEABL( South East Australian Basketball League) in the ABA.
Wallbutton, still a prominent player in the Western Australian State League with the Perth Redbacks.
Władysław II the Exile
Vladislaus II
the Exile  (1105 – 30 May 1159) was a High Duke of Poland and Duke of Silesia from 1138 until his expulsion in 1146.
He is the progenitor of the Silesian Piasts.

Question: What nationality is Bolesław I The Tall's father?