I couldn't find David in 1930.
Then, I remembered that Joe N. could have been Joe Nathan, AKA Jo-nathan!

Sure enough, the only family that appears to match is the "Sping" family with a son called Jonathan.
[Actually, the surname looks more like Spivey.]

Mary SPING [SPIVEY] is living in Hertford, Perquimans, NC with Naomi, Arnnie [Arcenia], David, Jonathan, Edmond J., Ruth M., Pally (Polly?) V. and Hason (sp).