“Yn amlach na pheidio, erbyn i ewyllys gael ei darllen, bydd wedi mynd yn rhy hwyr i weithredu penderfyniad yr unigolyn i roi ei organau a helpu rhywun sy'n aros am drawsblaniad a allai achub ei fywyd.
“More often than not, when a Will is read, people’s organ donation decisions are known too late to help someone in need of a life changing transplant.