The name Roberta is a girl's name of English origin meaning "bright fame". Roberta and is often added to lists like Names That Mean Light and discussed in our forums with posts like "From a Poor Girl to a Rich Girl: An Heiress BNG, Pt. 1".
From the experts:
Roberta has been one of the most successful feminization names, up at #64 in 1936. It's a name that's found all over children's lit, often nicknamed Bobbie or Robbie, though Bertie is another possibility. Notable bearers have included singers Roberta Flack and Roberta Peters--plus it's the birth name of Joni Mitchell.