When I was a kid, I thought Dick Butkis & Engelbert Humperdinck's names were made up. I was right about Engelbert.

In 1966, Arnold's manager, Gordon Mills changed the singer's name from Gerry Dorsey,
the stage name Arnold was using at the time, to "Engelbert Humperdinck,"
after a 19th century Austrian composer famous for writing "Hansel and Gretel."

Here's Engelbert & Liberace. I wish I was there.