Albert Barnes Commentary 1 Chronicles 1:17

"The sons of Shem: Elam, and Asshur, and Arpachshad, and Lud, and Aram, and Uz, and Hul, and Gether, and Meshech." — 1 Chronicles 1:17 (ASV)

The sons of Shem—that is, descendants. Uz, Hul, Gether, and Meshech (or Mash) are stated to have been sons of Aram (Genesis 10:23). Meshech is the reading of all the manuscripts and is supported by the Septuagint here and in Genesis 10:23. It seems preferable to “Mash,” which admits of no very probable explanation.

Just as Hamites and Semites were intermingled in Arabia (see Genesis 10:7 and 10:29), so Semites and Japhethites may have been intermingled in Cappadocia—the country of the Meshech or Moschi . This Aramaean admixture may have been the origin of the notion, so prevalent among the Greeks, that the Cappadocians were Syrians.