[AnAmericanMother]

I’m laughing here . . . . I don’t speak a word of Welsh, but I can actually read that because in Scots Gaelic it would be Bliadhna Math Ur . . .

[Myrddin]

P Celtic vs Q Celtic languages. Common roots, but a Goidelic vs Brythonic branch. Breton looks like an odd cross of Welsh and French. I can wade through it.

The form of Merry Christmas in Welsh is Nadolig Llawen. The Irish Gaelic form is "Nollaig shona duit". Scots Gaelic is "Nollaig chridheil".

The Breton form is "Nedeleg laouen ha bloavezh mat" for Merry Christmas and Happy New Year. Very close to the Welsh form (Nadolig Llawen a blwydden newydd da). The Cornish form is "Nadelik Lowen ha Blydhen Nowydh Da".

The other Goidelic language, Manx, expresses the phrase as (Nollick Ghennal as Blein Vie Noa).