I'm trying very hard to keep true to the original building and furnishings which means spending ages scouring the internet for suitable pieces. It quickly became clear that, while I could get a variety of ladderback chairs of the correct period, I couldn't find any with the vertical spars that matched up with what I was looking for so..............I went back to the very nice people at Ashwood Designs and asked if they could produce what I was looking for. A couple of emails and a photo later resulted in these wonderful little chairs. I am so pleased with them and they're exactly what I was looking for. Thank you Susan.
(Ashwood are so pleased with them too that they've added them to their range).
All they need now are little tapestry seat pads to finish them off.