The 51-year-old had a "fleeting affair" with Chinese woman Tinglan Hong and daughter Tabitha was born on September 2011, reported People magazine.
"Everyone was right all these years, saying, 'Hugh, why don't you have some children? It changes your life'. Now that I have (a child), it is life changing," he said.
Grant said that one of six-month-old Tabitha's other names is Ji-ngxi, which he explains, has something to do with how she was conceived.
"I can't pretend it wasn't a little bit of a surprise. But it's a very nice surprise. In fact, the baby's name in Chinese, because the mother is Chinese, means 'Happy Surprise.'" PTI NDS
