Oda of Haldensleben

Oda of Haldensleben (c. 955/60 – 1023) was Duchess of the Polans by marriage to Mieszko I of Poland. Life Oda was the eldest child of Dietrich of Haldensleben, Margrave of the North March. She grew up in the monastery of Kalbe, near to Milde river in the north of Magdeburg. Eventually she became a nun there, and later was married to Duke Mieszko I of Poland. They had: Mieszko (born c. 979 – died after 992/95). Świętopełk (born c. 980 – died before 991?). Lambert (born c. 981 – died after 992/95). Some 80 years later a reference in an obscure church book mentions "Ote and Dago(me)". There is no actual document and the church book mentioning from c. 1080 is known as Dagome iudex and thus assumed to be one of the earliest Polish legal documents. It's a principal source for this portion of the history of Poland under the Piast Dynasty.