Hi kwiatek, that certainly would be interesting to have this be owned by someone as high level as a pasha. The location that this yataghan was found and the general time frame do line up with Kara Mahmud Pasha and Mehmed Pasha Bushati governing parts of the area. Looking back through the forum history, I believe I've found another example of Muharrem's work!
http://www.vikingsword.com/vb/showthread.php?t=14536