I just found the rest of my AFAM Whitfields in North Carolina but I don't think they are your Lines. My Whitfields are Wylie and Charity, born about 1820 and 1832. They had 9 children. The first historical record that I have is Mary E Whitfield born 17 May 1862 and died Aug 8 1935. The record is from the 1870 Federal Census for Albertson Township Duplin Co, NC. She married George Foy, My G G Father. The Census shows her as a Daughter of Henry and Lucy Foy. Henry and Lucy had a daughter name Mary but she wasn't born til 1898. The Census spells the surname as "Foye".
The next time you find George & Mary is in Trent Township Lenoir Co NC in the 1880 Census, living next door to Henry & Lucy Foy. The surname reverts to "Foy"
There are many white & AFAM Whitfields in North Carolina. I'll check my sources for your Kin.