The term "Arab", as well as the presence of Arabians in the Syrian Desert and the Fertile Crescent, is first seen in the Assyrian sources from the 9th century BCE (Eph'al 1984). Southern Palestine had a large Edomite and Arab population by the 4th century BCE. Inscriptional evidence over a millennium from the peripheral areas of Palestine, such as the Golan and the Negev, show a prevalence of Arab names over Aramaic names from the Achaemenid period,550 -330 BCE onwards. Bedouins have drifted in waves into Palestine since at least the 7th century, after the Muslim conquest. Some of them, like the Arab al-Sakhr south of Lake Kinneret trace their origins to the Hejaz or Najd in the Arabian Peninsula, while the Ghazawiyya's ancestry is said to go back to the Hauran's Misl al-Jizel tribes. They speak distinct dialects of Arabic in the Galilee and the Negev.