I saw your posting from way back in 2001. I'm wondering if maybe your grandfather, Wilson Daywalt, might be the son of George T. W. Daywalt?
The Wilson Daywalt I have was born in 1886 in Oregon. His wife was named Caroline and she was born in Iowa. In 1920 Wilson was living in Clackamas, Oregon and taking care of his dad, George T. W. Daywalt.