The Gold Star pins were given out to a lot of family members. Spouse, parents, children and siblings so one soldier could be responsible for several pins. And they were retroactive to WWI. So even with an authorization date of 1947, they would be given to WWII survivors.
Ribbons are still given out with medals. You don't wear medals on class A uniforms, just ribbons. Exception being the Medal of Honor which is worn around the neck.
I'm thinking the odds are in favor of being the individual I found but can't ever know for sure.
The USN pin I'm going to put in my father in laws grouping. We don't have his originals. No idea what happened to them. We aren't even sure what he had. He served onboard the USS Piedmont during the Korean War and was in "theater" but not in combat. Only served the minimum tour also so not likely to have advanced very far in rank. So it's a small display. Korean Campaign, a Piedmont patch and a 50th anniversary patch. Made my wife happy when I told her. He passed away about 4 years ago and it's still tough on her. We actually made this for him and gave it to him for Christmas a few years before he passed away and it's one of the few things we were able to retrieve from his wife after he died. She isn't her mother and none of us are close to her. Long story. About the only story she knows about his service is seeing the Geisha girls in
Japan. I guess he used to tease them about it or something. I have his overcoat which we saved from the trash heap his second wife was accumulating.