21
by Roberts, Ellis
Published 1785
argraphwyd gan Dafydd Jones

24
by Roberts, Richard
Published 1794
Argraphwyd gan W. Edwards, Ele y gellir onel argraphu pob math o lysrair cynraeg a saesnaeg, yn v moddhardda, acam... pris mwya hesymmol
Other Authors: ...Roberts, Ellis...

25
by Roberts, Hugh
Published 1760
Argraphwyd ynghaerlleon [sic] gan Elizabeth Adams, tros Petter Maurrice, Bala
Other Authors: ...Roberts, Ellis...