Was abram father terah a Sumerian?

Abram, later known as Abraham, is traditionally considered to be from Ur of the Chaldeans, which is often associated with ancient Sumer in southern Mesopotamia. Terah, Abram's father, is described in biblical texts as living in this region. While the specific ethnic designation of Terah as a Sumerian isn't clearly defined in ancient texts, the cultural and geographical context suggests a connection to the Sumerian civilization.