Mehmed I
Before and after the Golden Horde fell, Dobrujan Muslims, like the Crimean Tatars, were recipients of its cultural influences, and the language in use was Kipchak. The extension of Ottoman rule, effected under Sultans Bayezid I and Mehmed I, brought the influence of Medieval Turkish, as Dobruja was added to the "Beylerbeylik" of Rumelia.