The decision by Catherine Zeta Jones and Michael Douglas to give their daughter the traditional Welsh name Carys has delighted the actress' family in Wales.
Catherine Zeta Jones with her Oscar
The couple's second child, Carys Zeta Douglas, was born weighing 6lbs 12oz (three kilograms) on Sunday morning in New Jersey, United States.
The name Carys is a traditional Welsh girl's name and is derived from the Welsh word caru, meaning "to love".
Naming the baby Carys keeps up the couple's passion for Welsh names after they called their son Dylan, a name made popular by poet Dylan Thomas.
Like many traditional Welsh names, Carys has drifted in and out of fashion over the years, but is currently popular with parents.
The star's grandmother, Zeta Jones, 86, from Swansea, south Wales, said she was "really thrilled" the couple had had a girl - and that they had decided to use Zeta for the baby's middle name.
The couple have stuck with Welsh names
"I think Carys is a lovely name and they were thinking about it for their first child," said Mrs Jones.
"Catherine is very proud of her Welsh roots."
The Hollywood actress's former dance teacher Hazel Johnson added: "I was really excited when I heard the news. It's especially lovely that she now has a boy and a girl.
"She's certainly sticking to her Welsh roots and Carys is such a lovely name.
"I saw her not long before she gave birth and she was blooming - all along I had an inkling it would be a girl."
South Wales bookmakers Jack Brown had taken a number of bets on the baby's name.
"It was a flutter for the ladies. We had a couple of people who put a pound or two on Carys at odds of 12-1," said a spokesman for Jack Brown.
The firm had also taken money on names including Elizabeth, Zeta and Sarah.
There were other bets made on the name Cerys, which became well known through Cerys Matthews, the former lead singer of Catatonia.
Heini Gruffudd, a lecturer from Swansea University, said Carys may have its roots in the Greek name Charis, which means grace.
The equivalent Welsh boy's names are Carwyn, meaning "blessed love" and Caradog, meaning "beloved", who was a 1st century British chieftain who rebelled against Roman rule.
Two-year-old Dylan has his name rooted in Welsh folklore, in which Dylan was a sea god.
He met an untimely death when his uncle, Govannon, accidentally killed him.
Legend has it the waves of Britain and Ireland wept at Dylan's passing.
The sound of the incoming tide at the River Conway is known as the "death roar of Dylan".
The name became well known through Welsh poet Dylan Thomas and Sixties singer Bob Dylan.