Chair may go back to 18th century just from looking at the seat on it !! If indeed the wood is as thick as it looks !! Both are pretty common styles for country furniture !! The bench possibly could be restored if you are handy and could recane it yourself !! The chair,, unless you just want to patch it up for a memento,, it would not be worth the cost to have someone try to restore it !! Its just too far gone I think to justify the cost !! Value of these is minimal at best !! If it were me I would have someone use the bottom and restyle the chair into a stool that is true to the period just for a keepsake !! Could possibly reuse some of the other parts !!