Curtains for 17th Century Farmhouse (saye or serica?)

Hi Everybody, I need some help! I'm a fledgling interior designer in need of advice re curtains for a 17th Century farmhouse sitting room. I believe the material used in this era was either saye or the more expensive serica (Latin for silk - I looked it up), but can find very little information and hardly any images. The ceilings are low and beamed, so not sure whether to choose short or long curtains. I'd like to know whether the material would have been plain or patterned and likely colours. All knowledge would be gratefully received!

Shades of Art Nouveau

Shades! That was the name of the boutique in Hounslow High Street! Wow, my memory cells are still in tact! Just a quick catchup from last time. Wanted to say that Gustav Klimt was (and is) just so amazing! My favourite artist by far. However, I'm looking for a painting of Sacre Couer and he doesn't appear to have painted one - der!!! Montmartre is one of my favourite places in the whole world and I would like to record that fact by placing a painting of said location on my sitting room wall, but so far, nothing to match either colour scheme (cranberry reds, purple, blue-pink) or art nouveau style. Does anyone out there have a suggestion?