Oh is Puyallup the name of a group? I've seen it on maps and always wondered about it because it looks soooo much like an indigenous australian place name from the southwest of Western Australia.
The 'up' suffix is a common place marker in some Noongar dialects, so it's very common in town, suburb or neighbourhood names. The rest of the word fits so well as well. For example there's a Mullyalup, which is pretty dang close.