you i’ve been thinking lately about how ginny’s the only one out her friends and family to not keep her maiden name– which seemed weird at first, since ginny’s plenty independent, has family pride, and isn’t the type to do something just because it’s traditional. not to mention she’s rather famous in her own right due to her sports career, and seeing as how she continues writing on the subject, she probably could cash in on maintaining her name.
but then i thought of how for almost his whole life harry has been the odd one out as a ‘potter’. he grew up in a family with a different last name than him, who went out of their way to single him out as an 'other’. harry never had any relatives with his name or any sort of substantial connection to family member, which only exacerbated his feelings of being an outsider. i think he would have been proud of his name on some level– it honored his parents who gave their lives for him, and certainly his name became a big part of his identity as he grappled with his fame. but still. harry was the only potter. he had no family, no one else with his name.
i think ginny would have picked up on this, though i doubt harry would have articulated it (or even consciously recognized it). she took his name as a sign, an obvious indicator to all who met them, that harry was no longer alone. she was his family now.