Unknown couple

I don't know who these people are but this photo was found amongst my grandpa Simpson's things. It could have been his grandparents but not sure. The woman in the photo resembles my grandma who was my grandpa Simpsons wife. If she is related to my grandma she could be a Kelley or a Platt.

Who's grandparents are we? Can you claim us? Do you know who we are? If you can answer any of the above questions please let me know.