Mamgu means grandma in welsh. The recipe (if i'm at all truthful) doesnt belong to my mamgu but a family friends nan! Bara brith means speckled bread. I love this cake spread with butter and a good cup of tea. Tips, if the cake browns quickly in your oven cover the tin with greaseproof paper and return to the oven. Although this cake is translated as bread it is more of a cake so don't be scared if you find you've sliced a cake not a piece of bread.