The complex conservation history of the Stories of Theodolinda records, in addition to numerous interventions on paintings, also an attempt at radical destruction in the early eighteenth century, fortunately foiled by cardinal Erba Odescalchi, Who promoted the copy to drawing by a local painter.
Unfortunately a so-called restorer Valentini Napoletano scratched off all the gold, used profusely by the Zavattari.
An important moment is marked by the work carried out in the chapel by Luca Beltrami at the end of the nineteenth century, which also involved the cleaning of the paintings and the realization of a first systematic photographic campaign, the work of Carlo Fumagalli.
A second campaign, this time in colour, was carried out following the restoration directed by Ottemi Della Rotta in 1960-61. Systematic studies were carried out in 1989-91 as a function of a new comprehensive intervention.
