The Irish didn't have a monopoly on ancient horns. Two others are the Maori pukaea, made of wood, and the Danish lur, curved into a J shape.

A pair of lurs is depicted on the wrapper of Lurpak butter. Kerrygold and Anchor don't have matching pictures, but quite likely all three (the UK brand leaders) will vanish from the shelves after Brexit - NZ recently signed a trade agreement with the EU rather than bother with any special deal with the UK.

I'm working on a trio for Irish horn, lur and pukaea to be titled "The Dry Crumpets of England".