According to Jacqueline Doxo's novel Anne of Kiev: reine de France.

Henry I inherits the crown of the Franks, and with it – an abandoned country surrounded by enemies. In order to strengthen the position of France, he forms an alliance with the ruler of the mighty state of Kievan Rus – Prince Yaroslav the Wise, marrying his daughter Anna Yaroslavna. This marriage is flourishing in the country. Anna inspires Henry to do right and great deeds. Through weapons and diplomacy, they defeat enemies, expand lands, and bring peace and tranquility to them. However, happiness does not last forever. King Henry I dies, leaving Anna as regent of their first son, Philip. But will the future King of France forgive his mother that the people love the White Queen more than him? ..