Billionaire real estate mogul Donald Trump and his wife, Melania, have named their newborn son Barron William Trump. The couple's first child -- and Trump's fifth -- was born Monday at 8 1\/12 pounds and 21 inches, the New York Daily News reported. The couple chose the name Barron because "they both loved it," a source close to the family told the newspaper. "Donald just always liked the name." Trump's partner in NBC's "The Apprentice," Mark Burnett, gave the show a plug in his statement congratulating the couple. "Finally after three years, Donald Trump has a real, true apprentice," Burnett said.