We may also require further evidence from you such as a copy of your passport, marriage certificate or driving licence to verify your identity or to accurately update the register of electors.
Efallai y bydd angen tystiolaeth bellach arnoch hefyd, fel copi o'ch pasbort, tystysgrif priodas neu drwydded yrru i wirio'ch hunaniaeth neu i ddiweddaru'r gofrestr etholwyr yn gywir.