Portrait of a young boy in Oklahoma

This photo was found in my grandmother's old photo album. The surnames could be Samples, Sollers, Smith, Meehan, Murphy, Wheeler or others. My grandmother's name is Irene Meehan Samples. The photo was taken in Oklahoma in Jackson, Beckham or Roger Mills County. In the album beside this photo is another one of a little girl with the same background. I believe they are brother and sister.

Does anyone know who this little boy is?