Alias naming — when a property or business name is added to an existing named or numbered address — leads to an even more pronounced trend of name changes from English to Welsh language names.
Mae arallenwi (alias naming) - pan ychwanegir enw eiddo neu fusnes at gyfeiriad sydd eisoes ag enw neu rif - yn arwain at duedd fwy amlwg fyth o newidiadau i enwau o enwau Saesneg i enwau Cymraeg.