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.
Yng nghyd-destun y gyfundrefn Diogeliadau Amddiffyn Rhyddid, penderfyniad nad oes gan unigolyn y galluedd meddyliol i gydsynio i'r trefniadau arfaethedig.