I wasn't aware anyone actually believed that anymore.
You wrote:
“I wasn’t aware anyone actually believed that anymore.”
Incredibly it is still believed in by some Baptists even though there’s evidence for it. Even Baptists have repeatedly debunked it - including the former head the Southern Baptist Theological Seminary:
http://books.google.com/books?id=V68OAAAAIAAJ&printsec=frontcover&dq=William+Heth+Whitsitt
Whitsitt was tossed out of office for his research. Ironically, however, the grip that Landmarkism/Trail of Blood had on Baptists has steadily eroded since then.