"Mae'r llofnodi heddiw yn gam pwysig ar gyfer y Fargen drawsnewidiol hon, a byddwn ni'n parhau i weithio gyda'n partneriaid i sicrhau'r fargen gywir ar gyfer Gogledd Cymru.
“Today’s signing is an important step forward for this transformative deal and we will continue to work with our partners to deliver a Deal which is right for North Wales.