This article includes the results of a series of field research, which was carried out by TIKA under the project called "A Research about the Shrine of Yunus Emre in Azerbaijan", and comments about information in some historical documents gained by this research. The researches were made in especially Gah region and other places like Samahi, Kebele, Ismailli and Seki between December 22nd and 27th 2010. According to the research results Yunus Emre had lived for a while in Gah region of Azerbaijan. The tomb in Oncalli County is assumed to be his tomb. This article also presents some identifying information about Yahya-yi Sirvani.