Johnny St. Cyr (b. New Orleans 1889, died Los Angeles 1966) held a long and distinguished career as a banjoist. He played with all of the top names of his era including most notably King Oliver, Fate Marable and Jelly Roll Morton. He recorded the iconic Armstrong Hot Five and Hot Seven recordings of the 1920s.
An amazing resource, now online, is a collection of interviews and recordings by Alan Lomax of St. Cyr playing and speaking about his life. They can be found at the Cultural Equity webpage.