Follower of Guido Reni

Didacus of Alcalá, or Diego de San Nicolás, was a Franciscan lay brother in Spain in the 15th century, who was among the first group of missionaries to the newly-conquered Canary Islands. He frequently took bread from the monastery's refectory to give to the poor. On one occasion when he was carrying a cloak full of food, he was accused of stealing and challenged to reveal what he was holding. Miraculously, when he opened his habit, the loaves of bread had transformed into roses.

This design is known in another version,¹ and both works most probably follow a lost prototype by Guido Reni.

¹ Sold at Christie's, London, 4 July 2012, lot 208 (as Bolognese School, 17th century); https://www.christies.com/en/lot/lot-5586371