If possible, you should include written or photographic evidence to support your request and tell us what sources you have used to find out about the monument.
Os yw'n bosibl, dylech gynnwys tystiolaeth ysgrifenedig neu ffotograffig i ategu eich cais a rhoi gwybod i ni pa ffynonellau rydych wedi'u defnyddio i ddysgu mwy am yr heneb.