In the mountains, "Many kinds of cloth were woven for clothing. Tow linen and flax linen were used for
lightweight clothing. Wool could be spun in various weights and woven as twill or plain weave,
in various colors, stripes, and plaids. When wool and linen were combined in a plain weave, i.e.,
a wool weft woven with a linen warp, the result was referred to as linsey or linsey-woolsey.
Linsey could be woven in a range of weights and had many uses. Another combination fabric
used for heavy weight clothing was called “jeans,” “Kentucky jeans,” or “janes.” Jeans was a
three-harness twill woven with a linen warp and either cotton or wool weft."
http://dc.etsu.edu/cgi/viewcontent.cgi?article=1165&context=etdIf they were so poor they were scrounging pouches from pants legs, the fabric was likely to have been homespun too. Typically mountain jean stuff was brown I believe. Ive never seen an old one from levi's type material either, but there could have been a few maybe...?
tca