The Everett Floyd you are looking for seems to be the Avorett Floyd, age 41, (family 675) listed in the 1860 Horry County South Carolina Census. His wife is listed as Aura L., age 38, and there is a daughter, Mary age 12, and a son, Cornelius age 4. He is the next family after W. P. Floyd (family 674 and supposedly William Pinckney Floyd, son of James Floyd Jr.) but I don't know how/if W. P. and Everett are related. The 1850 Horry County Census does not appear to have an entry for Everett but you may find him in another county or in North Carolina. In 1850 Everett would be about 31 years of age and Mary would be around 2 years old.