Caphtorim ben Mizraim

Biography
Caphtorim, per the Book of Genesis 10:13-14, is the son of Mizraim, the grandson of  Ham and a great-grandson of  Noah who fathered the many Mizraim tribes that settled in the land of Egypt.

Caphtor (Hebrew: כפתור‎) is a locality mentioned in the Bible, in which its people are called Caphtorites (or Caphtorim) and are named as a division of the ancient Egyptians.[1] Caphtor is also mentioned in ancient inscriptions from Egypt, Mari, and Ugarit. Traditional sources placed Caphtor in the region of Pelusium, though modern sources tend to associate it with localities such as Cilicia, Cyprus, or Crete. This is reiterated in 1Chronicles 1:11-12 as well as later histories such as Josephus' Jewish Antiquities.

Josephus Narrative
Josephus' Jewish Antiquities i.vi.2, which placed them explicitly in Egypt and the Sefer haYashar 10 which describes them living by the Nile.

Josephus (Jewish Antiquities I, vi) using extra-Biblical accounts provides context for the migration from Caphtor to Philistia. He records that the Caphtorites were one of the Egyptian peoples whose cities were destroyed during the Ethiopic War.

Tradition regarding the location of Caphtor was preserved in the Aramaic Targums and the commentary of Maimonides which place it at Caphutkia in the vicinity of Damietta (at the eastern edge of the Nile delta near classical Pelusium) and by the tenth century commentator Saadia Gaon and Benjamin of Tudela, the twelfth-century Jewish traveller from Navarre, who both wrote that Damietta was Caphtor.

The Midrash Rabbah on Genesis 37:5 (page 298 in the 1961 edition of Maurice Simon's translation) says that the "Caphtorim were dwarfs". However Goliath, is a giant Philistine warrior.