Brocks / Crawleys in Isle of WIght County, Virginia, USA

I am interested in Brocks and Crawleys in Isle of Wight County, VA. I am descended from Bennett F Brock, born 1838 in Isle of Wight County, whose father was Joel Brock (married in Isle of Wight County in 1835). This Joel Brock is possibly (but not likely) the Joel Brock who moved to Tennessee in 1821 and then to Missouri circa 1935 and died in Missouri in 1875. My paternal grandmother was Ella Crawley, from Isle of Wight County, who died in or near Norfolk, VA circa 1954.