Origin and History of SAR

History:

This surnames spread was a mix of people being forced to move and choosing to move. Wars and political messes forced some families to flee, taking this surname with them to new places. Others moved for better jobs or lives, also carrying this surname. Where they settled depended on things like resources, who they knew, and how society was organized. All this shaped where this surname is common today.

Description:

I need more clues, like where this surname is commonly found and how its been used historically.