Windows 8.1

I have a minor problem of my files having another owner's name (Tony Zhang, never seen that name). The name seems to show up with downloaded files. The name does not show on files I created using the computer, i.e MS word or excel. The name on this computer is Anthony Chen, and so is the microsoft account linked to it.

Does anyone know what is going on? It just bugs me a little seeing someone else's name that I've never seen.

Any help is appreciated!