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- Cofnodion Canolfan Uwchefrydiau Cymreig a Cheltaidd Prifysgol Cymru, 25 results
- Archif Sgriptiau BBC Scripts Archive, 23 results
- Archif Plaid Cymru,, 10 results
- Papurau Gilmor Griffiths,, 9 results
- Papurau Alun Eirug Davies, 9 results
- Papurau T. Ifor Rees a J. T. Rees, 7 results
- Papurau Gwilym R. Jones, 7 results
- Cofnodion Ymddiriedolaeth Nant Gwrtheyrn, 7 results
- Archif Dolen Cymru, 7 results
- Papurau Ieuan Wyn Jones, 6 results
- All
- Gruffydd, R. Geraint, 13 results
- Williams, J. E. Caerwyn (John Ellis Caerwyn), 10 results
- Jenkins, Geraint H., 5 results
- Jones, Bobi, 1929-2017, 3 results
- Owen, Morfydd E., 2 results
- Smith, J. Beverley, 2 results
- Jarvis, Branwen, 1 results
- Morgan, Elena Puw, 1900-1973, 1 results
- Cilie family., 1 results
- Morgan, Derec Llwyd, 1 results