A new book title from a national publisher centers around a Southern Quaker family.  Since most Quakers were anti-slavery, would there have been any Southern Quakers?   Or new Quaker congregations in the 20th century?

While I am not a Quaker myself, I am a Southerner, and there indeed are (and were!) Southern Quakers. In fact my Southern Quakers lived in the northern part of North Carolina during the 18th century. I don't know for sure what their opinion on slavery was, but given their Quaker faith I imagine they were against it!