 Sadovo began between the years 1365-1390, when the city was founded by Turkish villagers in Thrace—during the time when Ottoman sultans, such as Murad I and Bayezid I, ruled Bulgaria.It was a Turkish and Muslim village in the beginning, populated only by Turkish Muslims.The earliest testament to its existence is in a Turkish register from 1472, where it is described under the name "Cheshnegir" in "Filibe" (Plovdiv), and where it is recorded that all of the villagers were Turkish Muslims.