Help with identification / translation

Hi, I've spent many hours researching the marking on the tang
with no success. Any help would be greatly appreciated.

img_4635.jpg1.81 MB
img_4634.jpg1.89 MB
img_5088.jpg1.91 MB
img_5089.jpg1.53 MB
img_5090.jpg1.33 MB

Any help would be appreciated

Any help would be appreciated


The signature is "GAMMAKU UJINOBU".
See UJI104 through UJI107 - it could be any of those 4 smiths.