There IS a breed of hardy Galloway cattle or 'beltie' which is the iconic type - black with a solid white belt although there is an all-black variety too- originating from that area of South west Scotland.

Nothing to do with the 'gallowa' pony- always spelt with a small 'g' - not a breed like Connemara or Dartmoor as far I am aware, but a generic term in Durham for a small, normally pit pony. I often wondered where the name came from, but people who know say there was an endless source of hardy small ponies in Galloway at one time & the name stuck.
I used to live in Galloway, but no-one there could expand on this.