No but you never know. Things turn up in all sorts of ways. I've never found a connection, with Robert Barlow, to the other Barlows in the entertainment world of the 19th century. I have a good timeline for him from 1850 on -- and quite a bit even before this. It's little loose threads I'm working on. One interesting thread is Barlow's hint at rivalry/friendly banter using the Virginia Minstrels. On an ad. for his song books he says of his songs,
"...most of which are so spicy the Virginny Minstrels can't sing 'em without sneezing..."
He was connected with the best at one time or another.
Thanks Q and Steve.