The name
Atlas is used in at least three eithnic groups. Jewish,
Greek and Iranian. I only know a little of the possible origins of the Jewish use of the name.
There are two competing sources for the name
Atlas in Jewish geneology:
1. It is a Hebrew anacronym: "
Ach Tov L'Israel
Selah", which, loosely translated, means 'like a brother to Israel'.
2. Atlas is similar to "Atwaf", which I believe is an old
German word for silk. As such, the name could come from silk traders.
I have also heard that certain Jewish families in ancient Greece were given
Greek names. That could be anohter possible origin.