First found in Austria, where the name was an integral part of the feudal society which would shape modern European history. Many prominent branches of the family would strive to make this name renowned as they contributed to the social, economic and political affairs of the region. The family, which originated from the Sau river region, became prominent in local affairs in the Krain, Carinthian, and Styrian regions. Dieteri Galleri was the first to take on this name, and according to chronicles, appeared under the name Caspar Sauer as early as 1313. They branched into many cadet houses which played important roles in the national conflicts, as each group sought power and status in an ever changing territorial profile.

Some of the first settlers of this family name or some of its variants were: Christopher Saur, who came to Germantown, Pennsylvania in 1734. Adam Sauer came to Philadelphia in 1731; Henrich Sauer arrived in Philadelphia in 1733.

For more information on the last name Souers, the PDF Surname History is available for purchase as well as other products.