Dating an old home made with pegs
To determine age, consider the form and function, tool marks, construction techniques, and materials used in the furniture. Pit saws, used from roughly the 1600s to 1750, left irregular, slanted, deep rough marks.
The roof may also help identify multiple building phases.
Once the glue has dried, you can twist the wool into a hairstyle to cover the metal ring. Finally, take the sewing needle or a sharp embroidery needle and a piece of strong sewing thread and using a knotless loop start to attach it through the metal loop of the 'eye' screw (see diagram).
Pull the knotless loop tight (it should mostly disappear into the hair) and tie a knot in the ends at the top to create a fine hanging loop.
Wood will also show signs of oxidation and patination with prolonged exposure to air and light.
These tips will get you started, but I encourage you to read and study further.
Secure the end of the wool by using the chenille needle to thread it behind the densely wrapped yarn: push the needle through, pull the yarn tight and then trim off the excess length. Add a blob of glue to the peg doll’s head and then wrap a piece of wool roving around the metal ring (from front to back) to look like hair.