Druggett. Source: wmboothdraper.com
Part of the ‘Antique Fabrics‘ series, this fabric isn’t necessarily extinct, but it was more popular in the past than the present.
AKA drugget.
A coarse, economical wool fabric (sometimes wool-silk or wool-linen). It was used for coats, breeches and waistcoats.
Today it is still a coarse fabric, but with a cotton warp and wool weft, used for rugs and tablecloths.
UPDATE: I found a site for re-enactors which sells drugget appropriate for historical costuming. Yay!
Fabric For Cosplayers