Your family is defined as your spouse, children under 21 (or dependent on you), as well as your parents and your spouse's parents, if they
Elch teulu at y dibenion hynny fydd eich gŵr/gwraig, eich plant o dan 21 oed (neu blant sy'n ddibynnol arnoch) a'ch rhleni chithau a rhieni'ch gŵr/gwraig os yw'r rheiny hefyd yn ddibynnol arnoch2.