Theodelinda was a Baviarian princess who married Authuri, king of Lombardy (northwest Italy). Authuri died while Theodelinda was still young, and she selected Agilulf as her second husband and successor to the crown.
As queen of the Lomboards, Theodelinda exerted a wide influence, particularly over religious matters. She was a follower of the Nicene creed – the doctrinal statement of belief in the divinity of god the father, son and holy spirt which is today followed by most mainstream Christian denominations. Theodelinda converted Agiluf, who was a pagan prior to their marriage, and as a result spread Christianity throughout Lombardy.
The queen was also responsible for the construction of a number of churches across Lombardy and Tuscany, including the Cathedral of Monza and the first Baptistery of Florence.
Theodelinda is also closely associated with the legend of the iron crown of Lombardy. The story went that the mother of the Roman emperor Constantine I, Helena, had found the ‘true cross’ – the cross which Jesus of Nazareth had been crucified upon. She took from it a number of nails, considered holy relics, and gave them to her son. Helena used one of the nails to calm the sea during a storm. Another was mounted on Constantine’s helmet, and a third made into a bit for his horse.
The remaining nails were used as diplomatic gifts, and one was sent to queen Theodelina. She had the iron relique set into a golden, jewelled diadem, which became known as ‘the iron crown’. The crown is still on display today in the Cathedral of Monza, alongside 15th century frescoes which narrate the story of Theodelinda.
Catholic Encyclopedia (1913), Volume 9L Lombardy – Paolo Silva
History of the Langobards – Paul, the Deacon