Looking for Harris Ancestors IN Wales

I have been told my Harris ancestors came from Wales, but am having
trouble connecting.
Here are some of the names that I have that may have come from Wales.
Kimbal Harris m. Prudence ??
A son John A. Harris m. Mary Gower. She may have been from Douglas
Co. Missouri. He is buried in Jacobs Cemetery near Belfast or Belpast
Arkansas.
John A. and Mary Harris had these children: James W., Lillie Belle,
Isaac Jackson(my grandfather), Martha, and Nancy.
John A. later married Nancy ?? and they had Ed and John Wesley.
Cannot make the connection to Wales.