The daughter of late Nirvana frontman Kurt Cobain and singer Courtney Love welcomed her first child on 17 September, according to an Instagram post that she and Hawk posted today. They have named the baby Ronin Walker Cobain Hawk. "Welcome to the world most beautiful son. We love you more than anything," Cobain captioned the post. Many of the couple's famous friends and family shared their good wishes, including new grandpa, retired pro skater Tony Hawk, who joked, "My favourite grandson!".