This name has become very popular in the 2010s; its probably a modern coinage based on the syllable "brae" and the ending -lyn. Br- names are currently very popular (Brianna, Brayden, Bree) and the long A sound is also very popular (found in names like Aiden, Caden, Kayla, Kaylee, Jada etc.). Adding -lyn to names is also currently a trend (Jayden -> Jailyn, Kayla -> Kaylin etc.)
See Also: Brae

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