Agnes of Landsberg dating history

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Henry took possession of Otto's territories after the latter died without heir at the Harzburg in 1218, after a turbulent reign. He handed the Imperial Regalia to Frederick II and retired to Brunswick, where he spent the rest of his life in peace. In 1223, he declared that Otto the Child, the only son of his brother William would be the sole heir of the Welf allodial possessions in Saxony. He died in 1227. He had two daughters and a son by his wife Agnes. He had already transferred the Palatinate to his son, Henry II. However, Henry II died in 1214. It appears that after 1214, Frederick II handed the Palatinate to Duke Louis I, as there are no deeds dated after 1214 in which Henry call himself Count Palatine or takes any action regarding the Palatinate. Henry married his daughter Agnes to Duke Otto the Illustrious of Bavaria and her sister Irmengard to Herman of Baden. There is a theory that the Getrude of Brunswick who married Duke Frederick of Austria may have been a daughter of our Henry. After the death of his beloved Agnes of the Palatinate, Henry remarried to Agnes of Landsberg. From this second marriage, he had no children.