The shields in the first two screens were created years ago for Eldanorcara. The Butterfly shield mesh was created by Skinjack which I converted and had started to texture for him, the other was a test mesh of an Elven shield I was developing. I think those were the first test/ sample textures.
Ah yes, with all those beautiful bows with the particle effects as well! What ever happened to those projects?
I think they're both the work of Sir Phijama... exquisite.
I also reckon you're right with the sword... it is one of mine although I can't remember its name or how it was released originally... but I may have a copy of it here somewhere. I'll start looking if you like NinjaMonkey?
The file name for the mesh is "Alteansword.nif," sounds familiar. I did download the pack and pull the mesh/textures out for myself actually. Though to be honest, I was just using NIBLE to convert them to Oblivion for my own use.
That sword wouldn't convert though, not sure why. Your Macha did convert very well though, with the exception of some clipping issues.