Doc Roberts (1897 to 1978). Kentucky recording fiddler of the 78 rpm era.
Why this player is listed
Doc Roberts appears in the Play Bluegrass guide to notable fiddle players, which collects contest champions, bluegrass fiddlers, Canadian fiddlers, judges, and departed legends tied to the tradition.
More fiddle context
For the larger list, start with the big list of fiddle players. For the style itself, read the guide to bluegrass fiddle.