I did a little searching online for the block name – not easy to do! I really do wish I had a digital version of one of my block encyclopedias!!
I found a similar block on the All People Quilt site and by looking up the name, I found the exact block on Barbara Brachman’s Civil War Quilts site.
I’ve drawn the block quickly in TouchDraw – the inspiration quilt most likely uses 4 and 2 inch finished half square triangles but I think I’d try an oversized version using 6 and 3 inch HSTs.