As fans pondered the meaning behind Nicole Kidman's baby's name, Sunday Rose Kidman Urban, the actress's father has revealed its inspiration.

One day after the baby's birth, Antony Kidman told the Daily Telegraph Tuesday that he and his wife suggested the name, inspired by Australian artist Sidney Nolan's muse, Sunday Reed.

"There was a lady named Sunday Reed who was a prominent patron of the arts in Victoria," Kidman told the Daily Telegraph.

"I have read a bit about Sunday Reed and her husband John — she was a key mover and shaker in the arts around the beginning of the century," he said. "The name Sunday struck me as being a nice name for a woman, so my wife and I mentioned it."

The connection could be the reason behind Oscar-winning actress Kidman and her husband, country music star Keith Urban's keen interest in a Sidney Nolan exhibition at the Art Gallery of New South Wales shortly before they announced the pregnancy.

The January exhibition featured a quote about birth from Nolan which was scrawled across a wall. "When you are young you are given a good view of life, because of your closeness to birth," it read.

Kidman appeared mesmerized by this quote, before Keith wrote it down, the Daily Telegraph reports.

Urban's brother Shane told a Sunshine Coast radio station that the baby's second name is a tribute to their late grandmother Rose.

Meanwhile, Matthew McConaughey and Camila Alves turned to the Bible for inspiration in naming their baby son Levi Alves McConaughey, reports OK! magazine.

"Levi was another name for the apostle Matthew in The Bible. They were, in fact, two names for the same person," the actor told the magazine. "Our son was born at 6:22 pm, and this particular time represents my favorite verse in the book of Matthew in The Bible: 'If thy eye be single, thy whole body will be full of light.'"

Click here to read more in the Daily Telegraph

Click here to read more in OK! Magazine