Not a bad showing so far. BOS CCR, Raspberries, and GFR, stayin' up all night with Freddie King.
I always thought it was Frank King... which certainly scans better (one less syllable)
Pretty sure it's Freddy. Several lyric sites and wikipedia all concur:
Out on the road for forty days
Last night in Little Rock, put me in a haze
Sweet, sweet Connie was doin' her act
She had the whole show and that's a natural fact
Up all night with Freddie King
I got to tell you, poker's his thing
Booze and ladies, keep me right
As long as we can make it to the show tonight