I added the below caption and images to the Trombone History Timeline (17th century—first half).

I have also added this picture and caption to the collections of images in Angel Trombonists throughout History (where there are now 80 examples) and How to Hold a Sackbut: The Grip of the Early Trombone in Pictures (where there are now 74 examples).

1620—Naples, Italy: Two frescoes by Belisario Corenzio at the church of Gesu Nuovo include angels playing trombone (see below images; public domain) (Romano 10, 19).