If you would like to know more about these people, you can look at our information booklet or speak with us and we will help you get in touch with them.
Os oes arnoch chi eisiau cael gwybod mwy am y bobl hyn, disgwlwch ar ein llyfryn gwobodaeth neu siaradwch â ni ac fe fyddwn ni’n eich cynorthwyo i gael i gysylltiad â nhw.