Arwyn is of Welsh origin, translating to "golden". It's composed of two elements: "ar" meaning "silver" or "gold", and "gwen" meaning "fair" or "white". In Welsh literature, particularly in the Mabinogion, Arwyn appears as a male character. However, it's also used as a female name due to its melodic sound and unique spelling. The name gained some popularity internationally after appearing in J.K. Rowling's Harry Potter series with the character Arwyn Norris, though it remains relatively rare compared to more common names.
The name Arwyn experienced a notable increase in popularity between the years of 2002 and 2023, with a significant spike occurring around the mid-2010s.