Among the objects conserved (not on display but accessible upon request) in the museum of the Casa Morandi in via Fondazza, Bologna, where the painter Giorgio Morandi resided with his sisters until his death in 1964, are two single–leaf illuminations for which new attributions are proposed. The two parchment leaves were presented to the painter by his friend, the collector Luigi Magnani, in the 1950s, on two separate occasions. Both are miniatures from liturgical manuscripts produced in the Emilia region, which Magnani most probably acquired on the Bolognese art market. The first, depicting the ‘Pentecost’, is from the hand of the anonymous illuminator known as the Seneca Master (or the First Master of San Domenico) and is datable to the first quarter of the 14th century. The second, displaying the uncommon subject of ‘Christ Creator of the Stars’, is instead attributable to Bertolino de’ Grossi (first half of the 15th century). The discovery of several letters also enables the author to reconstruct the relations between Magnani and Pietro Toesca, his teacher during the period of his post–graduate studies in Rome, and mentor in the field of the history of manuscript illumination.