New York, Dec 19 : Alaska Governor Sarah Palin's first grandchild is a boy, her father Chuck Heath has revealed.

Bristol Palin, 18, has a due date of December 20, Heath told Grandparents. com about his pregnant granddaughter.

The grandfather was asked what name Bristol and the child's father, Levi Johnston, had decided upon.

"Oscar . . . No, I''m just kidding. They don''t have a name for it yet," the New York Post quoted him as saying.

Heath also revealed that Palin had more than 200 media requests, plus 87 boxes of unopened mail from all over the world. (ANI)