This seal is a name awarded to a martial artist. I think the name means strong and protective. The word for strong might be the same word used for iron mills?
Any help on the Chinese characters and their translation would be greatly appreciate.
權固守 means "hold the power firmly" or "strongly defend the rights".
權 --> 權力 = power (as in governing power)
權 --> 權利 = right (as in human rights)
固 = firmly; solidly; strongly
守 = hold; protect; defend
Depending on who awarded this name, it could describe either a pro-authority government (Party) loyalist or a human rights activist.
Another possibility:
權 --> 主權 = sovereignty
in this case, 權固守 means "strongly defends sovereignty", describing a patriotic person