I've read that it could be a corruption of "God's". It says in Jalima's link that the Germans call it Karfreitag, kar being an old German word for sorrow. That's just brought back a long lost memory to me of my mother serving up carlins (a sort of black pea, cooked with vinegar) during Lent. I'd completely forgotten about that. I wonder if the name comes from the same source?
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AIBU To Suggest We Should Call Time On Fireworks?
Kellogg's have changed the recipe for Rice Krispies!



since it’s Good Friday. Might do more good than attending a religious service.