the sword is around 1580 for similar blade types please see
http://www.vikingsword.com/vb/showth...ghlight=handed
almost all the blades of this type have a running wolf engraved at both sides, can you check if this the case with your sword.
16th century swords marks are almost never traceable to the sword maker, a few famous sword makers, as standler e.o. aside.
can you post pictures of the guard finals and pommel?
best regards