Note: A small number of respondents have indicated that they started learning to speak Welsh at home as young children, but that none of their parents had any ability in Welsh.
Nodyn: Mae nifer fechan o ymatebwyr wedi nodi eu bod wedi dechrau dysgu siarad Cymraeg gartref yn blant ifanc ond nad oedd gan yr un o’u rhieni unrhyw allu yn y Gymraeg.