Wikipedia
Magan (also Makkan) was an ancient region which was referred to in Sumerian cuneiform texts of around 2300 BC and existed to 550 BC as a source of copper and diorite for Mesopotamia.
The location of Magan is not known with certainty, but most of the archeological and geological evidence suggests that Magan was part of what is now Oman. However, some archaeologists place it in the region of Yemen known as Ma'in, in the south of Upper Egypt, in Nubia or the Sudan, and others as part of today's Iran or Pakistan.
With the disappearance of trade from the Indus region, the copper from Magan was later replaced by copper imports from ancient Cyprus.
Trade was common between Magan and Ur before the reigns of the Gutian kings over Ur. After they were deposed, Ur-Nammu of Ur restored the roads and trade resumed between the two nations (c. 2100 BC).
Magan is an Irish surname which originated in County Leitrim.