
What really caught my eye is the Owl on the bottom right. Along with having racing goggles, and a collar with a candle (making him the damn coolest owl I have ever seen) it's captioned "This is an Owl", making the entire thing hilariously surreal. What I've been able to find out through my research, and it isn't much, is that this is a dutch text done for a broadsheet, and that there's an accompanying bit about Cromwell (all available here.) Also, I've found an earlier draft of the picture which lacks some of the shadows, minor details, and the owl along with the Swan next to the Speaker of the House's chair in center right.
What I have not been able to find out about, however, is the Owl and what the hell the Owl is supposed to represent or why he's decked out the way he is. So does anyone have any ideas about that, or have any suggestions on books that might have answers?