sentences:  His childhood was rather tragic, as described by several contemporary chroniclers, including Janko z Czarnkowa, although as the facts vary depending on the chronicle, it is assumed parts of that story became dramatised in the years that passed.According to Janko z Czarnkowa, when Anna became pregnant, Siemowit accused her of adultery and imprisoned her in the castle.After the birth of Henry, despite weak evidence, Siemowit ordered his wife strangled and the boy cast away from his court, and raised by a peasant family.