Wade Wingfield and Rowbotham

[dooey]

g'day all,
I picked up this razor from a swap meet a couple of months ago. I have started to take a little of the rust and staining off with a bit of sandpaper.
I was wondering if anyone could help me identify some more about it. I have a fair bit of history on Wade Wingfield and Rowbotham but the "ward bros federal" on the face of the blade is a mystery to me. Also any tips for how to get rid of some more of the staining with out removing the detail?