Chaldeans

And Haran died before his father Terah in the land of his nativity,
in Ur of the Chaldees.
Genesis 11:28 KJV

And Terah took Abram his son,
and Lot the son of Haran his son's son,
and Sarai his daughter in law,
his son Abram's wife;
and they went forth with them from Ur of the Chaldees,
to go into the land of Canaan;
and they came unto Haran,
and dwelt there.
Genesis 11:31 KJV

And he said unto him,
I am the LORD that brought thee out of Ur of the Chaldees,
to give thee this land to inherit it.
Genesis 15:7 KJV