The Linkspages at

The Triumph of Marriage: Painted Cassoni of the Renaissance Cassone Painting, Humanism and Gender in Early Modern Italy Domestic Painting in Fifteenth Century Florence: The Role of the Cassone within the Home Les Cassoni peints du musee national de la Renaissance Italian Cassoni From The Art Collections Of Soviet Museums Renaissance Cassoni

The cassone is a decorated chest, generally made in Italy. These were traditionally a gift to a bride from her parents.

For more, see Scenes from a Marriage, and Cassoni and the Decameron.

Additional random notes:
Some of the examples below consist of pre-17th century panels assembled into a cassone in the 19th century.
The short side-panels are called the testate.
The cassone-painter is called the cofanaio.