I'm surprised its popularity waned, to be honest, given how popular the similar-sounding Hannah is; nevertheless, Shannon is on its way to being dated. Its highest popularity was in my parents' generation, but as a 90s kid I've known quite a few Shannon my age. It's decent name, overall - and despite its unisex history, I'll admit I have a hard time seeing it on a male (every Shannon I've ever met has been female).
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