I found a figure to represent the man himself. It is a Zvezda GNW Russian artillery train driver on a Swedish horse. I have added a sash from green stuff, cut off the string of his whip to create a marshal's baton, and created a frilly lace from GS on his hat.
The base features some pieces of bark and a long musket. I have used a three color method on the bright colors of his coat, the rest had only one layer of highlights.
Another figure from the same set is converted to a GNW Saxon general who will most likely play a part in Calvacasa's opposition.