📜 What do the documents say?
The mosque was first built by Gümüşlüzade Tâceddin Mahmud Çelebi in the Hijri year 725. Among the people it became famous under the name “Taciye”, which comes from its founder's epithet.1, 2, 3
Why does it sometimes say 1324 and sometimes 1325? The Hijri year 725 corresponds in AD years to the end of 1324 and most of 1325. That is why the book says 1324–1325,1 while the sources mostly write simply 1325.2, 3 Both refer to the same Hijri year; it is not a contradiction.
The Gümüşlüzades were a family who led the spread and institutionalisation of Sufism in Amasya; this mosque is one of the most important of the buildings they commissioned.2
The mosque also had an official name. In the Ottoman archives, in land survey register (tapu tahrir defteri) no. 387, the building is recorded as “Gümüşoğlu Camii”.2, 3