Prince Boleslaw (The Pious) of Kalisch & Princess Ilona Arpad of Hungary 
The Pious and Ilona were married in 1256 in Budapest, Pest, Hungary.1 They had three daughters named Elzbieta, Jadwiga and Anna.
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Personal Details
Prince Boleslaw (The Pious) of Kalisch
Boleslaw, known as The Pious, was born in 1222 in Poznan, Poland.1 He died at the age of 57 on April 13th, 1279.1
Princess Ilona Arpad of Hungary
Ilona was born in 1238 in Budapest, Hungary.1 She died at the age of 60 on March 6th, 1298.1
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Children
Princess Elzbieta of Kalisch
Elzbieta was born in 1263 in Poznan, Poland.1 She died at the age of 41 on September 28th, 1304.1
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33972&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I34077
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I34077