My ggg grandfather was Thomas Z.B. Vassar-born in either Clarendon or Sumter county, South Carolina. He died in Mississippi during the civil war (his family was in South Carolina). His father was Joshua. His grandfather was Daniel. A Joshua is listed in the Sumter county census in 1820 and in 1850. A Daniel is listed in 1810 and 1820. These are probably my ancestors. There are no Vassar/Vassers that I can find in South Carolina prior to this. I'm stuck here. Did they immigrate at this time, or where did they migrate to this part of South Carolina from? Any help would be appreciated.