Rebecca (Isaacs) Reed, Chowanoke - Maiden Name and Parents

I was checking to see if I'm related to John Robins, of the "Headmen of the Chowanoke"
after seeing a mention of him on this site that has a lot of info on various lines related to me:

https://renegadesouth.wordpress.com/2022/08/11/marvin-tupper-jones-...

Anyway, when I got to this Rebecca, I see her maiden name as Isaacs but neither of her parents have the Isaacs surname. Is she incorrectly connected, was she adopted, or is there an error in her name?

Thanks in advance for any additional information to help clarify her maiden name.