The fire that engulfed Richard Branson's Necker Island home seems to have ignited a romantic flame between houseguest Kate Winslet and Branson's nephew Ned Abel Smith.

Though Winslet traveled to the billionaire Virgin tycoon's private Caribbean island last month with her on-off boyfriend, model Louis Dowler, 35, she reportedly left smitten with another man, Smith, who was vacationing there with other members of the Branson family, according to Us Weekly.

In fact, Branson credited Winslet with saving his 90-year old mother, Eve, from the fire, which was blamed on a lightning storm caused by Hurricane Irene. The 35-year-old Oscar-winning actress, who was a guest of Branson's at the luxury compound along with her daughter Mia, 10, and son Joe, 7, played the role of hero and carried Branson's mother to safety from the burning building.

"Of course, she was obviously desperate to get her children out and my mother was there so she whisked my mother up in her arms and took her down the steps and anyway, and all is well," Branson said on "Good Morning America."

So well that Smith, 33, reportedly accompanied Winslet back to New York when she left Necker Island. Last week, they were photographed at the London memorial service for Branson's father.

Just who is Ned Abel Smith? Like his uncle, Smith has a few eccentricities. A few years ago he changed his last name to "RocknRoll" after putting the matter out to a vote.