Yes, that's right.
BTW, that index is a fabulous work. Thank you very much!!!
Ah, thanks on both counts.
I read somewhere, a few years back now so I don't remember the source, that all of the known baryton trios from the early 19trh century on were only known in this way. So people believed that Haydn had composed well over 100 string trios. They were arranged for Violin, Viola & Cello, just like a 'modern' string trio.

