Emma Parry Clements, his great niece, said stories would be told of her great uncle at family tea times.
“It’s amazing to see this turnout and him honoured in this way,” she said. “It was a part of history but I feel a part of it today standing here.”
After the accident, the car was buried in the dunes, where it stayed for 42 years before being recovered in 1969 and restored over a 16-year period.
Racing engineer Owen Wyn Owens undertook the work at his garage in Capel Curig and Babs has since been displayed at the Pendine Museum of Speed.
His son Geraint Owen drove Babs on two laps of the beach earlier.
“It was just an idea he had to dig the car up because [Parry-Thomas] didn’t have the same recognition as Malcolm Campbell and my father wanted to change that,” he added.
