Love this article about wing chairs.
 
Why the wings? A clue may be in the chair’s alternate name, fireside chair. The idea was that the wings protected you from drafts, while the roomy, upholstered seat was a cozy spot from which to enjoy a cheery blaze.
 
https://www.forbes.com/sites/houzz/2017/07/18/10-things-to-add-to-your-dream-home-wishlist/#75917f1cac21