The biblical Patriarch Abraham was from Ur in Mesopotamia.
Acts 7:22 To this he replied: "Brothers and fathers, listen to me! The God of glory appeared to our father Abraham while he was still in Mesopotamia, before he lived in Haran.
Genesis 11:28-3128 While his father Terah was still alive, Haran died in Ur of the Chaldeans (see Chaldea), in the land of his birth. 29 Abram and Nahor both married. The name of Abram's wife was Sarai, and the name of Nahor's wife was Milcah; she was the daughter of Haran, the father of both Milcah and Iscah. 30 Now Sarai was barren; she had no children. 31 Terah took his son Abram, his grandson Lot son of Haran, and his daughter-in-law Sarai, the wife of his son Abram, and together they set out from Ur of the Chaldeans to go to Canaan. But when they came to Haran, they settled there.