Pair of Italian Baroque Chairs

Over 10 years ago, I inherited these chairs from my aunt, who decades earlier inherited them from her aunt.  The tag under the cushions indicates that they are stuffed with hors/hogs hair.  I believe they have been reupholstered. 

I am curious about the following: the kind of wood, the time period during which they were manufactured, any interesting facts about them, what they are called (tub chair, vanity chair, etc)  and an approximate value.  I would like to pass them on to genereations to come with a full history to accompany them.  Thank you.