Hello this is something that I have been wanting to post for sometime.
The matchcoat I believe was an early type of cloth robe, after the buffalo in the east were gone and other types of furs came into fogue, the use of red and dark blue cloth called “stroud” was in high demand.
If you look at pic’s like the Three Cherokee Chiefs that went to London, and other mid 1700’s images you’ll see this blanket type robe.
For those folks that would like to see a good detailed image look for the artist Benjamin West and his painting of Colonel Guy Johnson, at http://www.nga.gov/home.htm and then look for the image.
This type of robe/blanket must have came into being shortly after the arrival of Europeans and developed over the 1700’s eventually giving way to either hunting jackets etc or just not being used after the 1830’s, really check out the patterns etc and then look around for other images.
This painting is also found in several other sources. This should get some creative minds happening.