Charlie Daniels and "the Blues" is a stretch for me,GUEST with a fiddlers elbow, but Muddy Waters started off in Clarksdale with a fellow named Henry "Son" Simms who played blues on the fiddle. According to Sandra Tooze'Muddy Waters biography, Son's sister described his sound as coming off like a saw, since he apparently had no use for resin on the bow. He can be heard on the "Complete Plantation Recordings" that was collected by Alan Lomax. There's four cuts on it with the "Son Simms Four" band, which was Muddy's first band. Good rough stuff.
Clarence "Gatemouth" Brown denies being a blues musician, but can scrape a load of "blue" notes on a fiddle when he wants to. He's been recording for more than fifty years and still tours. Check him out if he's ever in your area.

There's a local artist down here in South Florida called the Amazing Randi. I've never heard her but the people round here say she can burn up some blues on it
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Like Greg sez up above, there's loads of good fiddle playing in the jugbands. I think when the jugbands lost popularity, the fiddle dropped out of the blues. When the record buying public of the late thirties and forties heard "fiddle strains" they may have automatically identified it with old time jugband music. Big Band and R&B was coming in vogue by that then.
It was time to Shake that Thing!

Tweed