Because google only returns claims it comes from ASoIaF or GoT, which I am 94% isn't true

Hi! We're a fairly diverse plural system with various origins and interests! ADHD, autism, likely BPD. Uhm... Yeah, gonna work on this a bit more soon?
Because google only returns claims it comes from ASoIaF or GoT, which I am 94% isn't true
Reasonably certain it is true. Seasons work oddly in ASoIaF/GoT, and it has been summer (a season with minimal hardship) for several years at the start of the first book.
The context is a child whose lifetime has seen only Summer saying something naive and getting dismissed with the phrase "oh, you sweet summer child"
I could swear I've heard it long enough ago and in contexts that makes that unlikely, but I can't actually disprove it.