Like you, I have also run into a deadend in Buckingham Co., VA. I have been researching a man named Samuel Falwell who was born there in about 1790-1794. He moved to Tennessee and raised a family. One of his sons moved on to Arkansas and founded the branch of Falwell's that I am descended from. I ran across a couple of records on familysearch.com that may be of some help to you. I found a Roland Falwell (b. abt 1810) who married a woman named Mary (b. abt 1814) in about 1830. He is also listed as marrying Susan but the date was not listed. I also have a record of land being sold in 1840 by a Rowland Falwell in Albemarle County, VA. I'm afraid that's all I have. Let me know if I you have any question. Good Luck.