My Family Tree

http://www.scvcamp469-nbf.com/ancestors/Ellis-Ancestor.htm
Dale T Ellis' (Robert was his ggf ) said
"Captain Robert Rodolphus Davenport was born in Jackson Co., Tenn. on August 8, 1823. Capt. Davenport was the son of Joseph Davenport, a veteran of The War of 1812 who was born in Virginia on June 2, 1789, and Mary Thomas Davenport. There were 7 children in this family, and in about 1839 all 7 brought their families as a group to Little Wills and Big Wills valleys (later known as Valley Head) where they settled on farms. Valley Head became an early trading center for the area. The first general store was operated by Robert Rodolphus Davenport. Robert R. Davenport married Margaret Annie Spring, who was born Dec. 21, 1826 in Pikeville, Tenn. She died Sept. 4, 1904. They had ten children."

http://www.melungeons.com/articles/may2005h.htm
"Robert Rodolphus Davenport came to Valley Head from Tennessee and built a much-admired home, designed by an English architect, called Oak Lawn (Elizabeth S. Howard, A Partial Who Was Who in DeKalb County, 1978)"

http://books.google.com/books?id=YBP9NuTmpX0C&lpg=PA214&ots=JQJojJxN4L&dq=%22robert%20rodolphus%20Davenport%22&pg=PA215#v=onepage&q=%22robert%20rodolphus%20Davenport%22&f=false
some real accounts of these Davenports in "The Bear Went Over the Mountain"

DeKalb Co AL Census 1850 pg 399b.
DeKalb Co AL Census 1860 pg 22.