Following his death , she served as regent of the Duchy from 1637 to 1663 .
In 1619 , he married Christine Marie of France ( 1606 -- 1663 ) , a daughter of Henry IV of France and Marie de ' Medici .
Following his death , Christine Marie of France served as regent of the Duchy from 1637 to 1663 .
In 1619 , he married Christine Marie of France ( 1606 -- 1663 ) , a daughter of Henry IV of France and Marie de ' Medici .