I am SOOOOO sorry about that!
I would have sworn I heard a Five Royales version of Walking after Midnight on the radio twenty years or so ago, and just assumed that they wrote it. Having looked at the record label - yes, Don Hecht and Alan Block are the writers.
However, I'm a little perplexed because I just searched the ASCAP and BMI catalogs on the web, and neither one lists this song in their catalog (if they did, they'd show which artists have covered it), nor show Patsy Cline as recording it, nor show these guys as authors.
But this is waaay off thread, in't it?
Once again, please accept my apologies.