Abraham (also known as ibrahim in Islam), and his family were originally from the city of Ur, which was an ancient city in Mesopotamia.
Abram migrated to Harran, apparently the classical Carrhae, on a branch of the Habor. Thence, after a short stay, he, his wife Sarai, Lot (the son of Abram's brother Haran), and all their followers, departed for Canaan.
Look he originated in mesopotamia (not strictly Sumeria at that time (c.2000bce)). Migrated somewhere near syria and then toward Shechem, with is more or less SSW, iirc.Moreover, the names of Abram's forefathers Peleg, Serug, Nahor, and Terah, all appear as names of cities in the region of Haran (Harper's Bible Dictionary, page 373) because cities were named after their rulers.
(But as I know you will say, he was a fictional character - so I saved you a little wear and tear on your fingers)
