Posts: 347 Location: YORKSHIRE, UK
Tue 11 Oct, 2022 7:13 am
A quick check on Armour in Art produced this fresco dated 1390-95 from Runkelstein Castle in Italy
[ Linked Image ]
In Manuscript miniatures, there are earlier ones but I'm not convinced they aren't
great helms. The earliest classic frogmouth seems to be from ONB Cod. Vindobonensis 2762 Wenzel Bible dated 1389.
[ Linked Image ]
There are, however, 134 images tagged "frogmouth" so I may have missed something earlier.
Obviously, there are other sources out there, so earlier evidence is quite possible - I've just done a quick search in one source.