GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
Gwybodaeth a gaiff ei chreu pan fydd pobl yn ymwneud รข gwasanaethau cyhoeddus megis ysgolion, y GIG, y llysoedd neu'r system fudd-daliadau, ac a gaiff ei chydgasglu gan y llywodraeth.