Complex sentence: People of Elnadu and Palnadu, over period might have come to be called Ellanti and Pallinti and they mean the same general region of Guntur district and around.
Split into simpler sentences: People of Elnadu and Palnadu, over period might have come to be called Ellanti and Pallinti. Both Elnadu and Palnadu may represent the same general region of Guntur district and around.