The oriel stitch I used in this design is very old. It’s evidently named for an architectural element of the same name found in Gothic Revival structures throughout the United Kingdom. In architecture, an oriel is like a bay window that projects from an upper floor, and that is supported from below with a bracket or corbel. Unlike a bay window, it does not itself extend all the way to the ground. The windows in the oriels were often decorated with leaded or stained glass in beautiful designs.
Shawl is knit on the bias, starting in one corner, and increasing on every right-side row. It is knit even through the body, then decreased to the point on the far end.