When Ginny announced to her family that she was pregnant for the first time, Ron took Harry into the next room and told him, "Congrats mate, but make sure you're the one that names the kids Harry. You're my best mate, heck you're also my brother now, and I know you love her but remember that she was the one that named Pigwidgeon."
She actually did a pretty good job naming James Sirius and Lily Luna. She really wanted to name Al 'Neville Ronald' so they could call him Nel. But Harry won with 'Albus Severus' for some very unknown reason.