It looks like whoever wrote on the back of the photo had a bit of trouble with the spelling of the surname, as they look to have made changes to the word. Maybe sounding it out phonetically will make more sense.
The image is not very clear for me on an ipad. See what others think - they may request a clearer scan.
The surname does not appear to be English, and looks a bit like Viar?fl?ar. French maybe?

You should be able to work out Glenn's month of birth as he was 17 months old when this photo was taken in 1947. Searching some indexes for him might help find the surname.