The singer-songwriter spoke of seeing Tom Jones merchandise everywhere while visiting Transylvania.
"Every morning on his way to the set, the driver would be listening to Tom Jones," New York Times writer Josh Eells quotes White as telling him. "Later he went to a local record store, and there were something like 60 Tom Jones records.
"No-one could explain what the deal was, so White asked Jones about it. It turned out that everyone in Transylvania thought Tom Jones was a Gypsy. He insisted that he wasn't, but they still didn't believe him."
The former White Stripes singer apparently said: "They really thought he was a Gypsy, and he was hiding it. He didn't think that was the answer, but it seemed to me like it was the answer. Even if it wasn't, I'd make it that."
White collaborated with Jones on a cover of Howlin' Wolf's 'Evil' earlier this year.
"Seventy-one years old, and he just came in and murdered it," White said of the track.
White's debut solo LP Blunderbuss will be released on April 23.
> Jack White 'doesn't know why The White Stripes broke up'
Listen to Tom Jones and Jack White's 'Evil' below: