Ha, Hepcat, coincidence -- you had your first English Muffin in 1965, in the Northeast.
In 1967 I was going with a 21 year old girl, who worked for a Midwestern flour milling company that moved their home office to Boston (to the Pru). She was well-regarded, and invited to go along, which she did. Coming from the white-bread Midwest, at that time, well, we didn't know what a lot of things were. (Pizza didn't arrive here until 1957, McDonalds in 1959.)
She was served an English Muffin at a Boston diner, and loved it! A bread lover anyway, she just raved when she described it to me. It became her favorite thing for a while.
Well, she was my favorite thing, so after a couple months of loneliness and high long-distance bills, I took the train from Minnesota to Boston to propose, which, thankfully, she accepted.
And sometime later, English Muffins started to show up here.
So one day our company had a visitor from England, and I became his tour guide. He was a naturally curious guy, and we spent some time wandering through a grocery store. He spied a package of English Muffins, showed it to me, and laughed. I asked what they called them over there, and honestly, cannot remember his answer. So I still don't know.
But in the mid-sixties, the homogenization of America had not reached the stage it has now...more TV and news outlets, I suppose.