John Ricco, 34 Greenpoint, Brooklyn

What he says: Italy is in his blood. The pizzaiolo behind Grandma Rose’s in Greenpoint says his great grandmother came to Brooklyn in 1892 from the Bay of Naples. On his father’s side, the family came from Naples and Salerno.

“I don’t know much about where the lineage came from before that,” Ricco said. “My mother always said she didn’t know where the hell I came from — so I guess there’s something to that.”

He’s rumored to have some Austrian ancestry because of his light eyes and skin.

Ricco has a tattoo on his right arm with the lyrics to an Italian love song by Jimmy Roselli. Though misspelled, “piu forte di una categna” means “stronger than a chain.”

“I used to play his records with my grandmother,” said Ricco, who named his pizzeria after her. “I just love the

song, so I woke up when I was 18 years old and thought, ‘I’m getting that.’ ”

What his genes

say: Ricco is 100 percent European and is distantly related to several famous people — including Susan Sarandon — on his mother’s side.

Hi s maternal DNA is very common and dominates in Europe, especially along t he Atlantic Coast. Because of its frequency in the general European population, the DNA appears in generations of royalty.

Ricco is also distantly related to Napoleon Bonaparte and Prince Philip, according to his 23andMe results. “It’s weird to hear, but it doesn’t surprise me,” Ricco said. “I do live my life based on my spiritual side. I’m driven by my beliefs.”

The rumors of his Austrian blood could also be true. Ricco shares DNA with Marie Antoinette, an Austrian who married into the French royal family.

Eskin ultimately traced Ricco’s DNA to Rome, which is 142 miles from his known family origin of Naples.

“I always felt like I was a Roman emperor in my former life,” Ricco said. “No one in the family has ever said anything about Rome before, but maybe there’s something to it. It’s exciting just to get a little input about myself that I never would have known otherwise.”