The French Quarter Deli was the replacement restaurant at the original location of The Keg O'Nails Deli. I'm still not entirely sure I understand the sequence of events that led to the Keg moving and The French Quarter being established, but it was a big brou-ha-ha and made the paper several times back in the day. You can read some comments at the Keg O'Nails closiing made by people who know more about it than I do.
At any rate, while I did finally get around to eating at the Keg after it moved, I never did get to try The French Quarter before it closed. I'm not sure why it closed either. It is in an odd little section of Rosewood, rather removed from where you would expect a restaurant. I know I would hesitate to fire up a cook stove next to Jim Casey's!