She thereafter exerted much influence in restoring Nicene Christianity to a position of primacy in Italy against its rival , Arian Christianity .
Theodelinda was allowed to pick Agilulf as her next husband and Authari 's successor in 591 .
Theodelinda thereafter exerted much influence in restoring Nicene Christianity to a position of primacy in Italy against its rival , Arian Christianity .
Theodelinda was allowed to pick Agilulf as her next husband and Authari 's successor in 591 .