Rhoddodd Carwyn Jones, Prif Weinidog Cymru, y Sêl Gymreig ar y Breinlythyrau yn y seremoni selio, ac roedd Rebecca Evans, y Gweinidog Iechyd y Cyhoedd, hefyd yn bresennol.
First Minister of Wales Carwyn Jones applied the Welsh Seal to the Letters Patent at the sealing ceremony, which was also attended by Public Health Minister Rebecca Evans.