Selçuk Hatun Cami?
I used GPS to identify this mosque, I'm pretty certain that's the one. If so, From TrakyaGezi's site I quote (Google-translated): "It was built for a person named Selçuk Hatun, the daughter of Mürsel, who was strongly thought to be an important person in the period of this mosque . The mosque, dated 1455, was originally built as a [simple local] mosque, and was converted into a mosque in 1656 two centuries later.

The walls of smooth cut stone are accompanied by brick material in the dome. Its minaret was climbed by applying one layer of cut stone and three layers of bricks. Its minaret is located at the northern end of the west facade. The last congregation place of the building, which has a portal on the north facade, has not reached today. Hand-drawn decorations on the mihrab are accompanied by a Turkish triangular belt on the skirt of the dome, and in a few places weaker decorations."