Great tide or born of the ocean
Dilyn is a modern phonetic spelling of the Welsh name Dylan. In Welsh mythology, Dylan was a sea god associated with the waves, derived from the elements 'dy' (great) and 'llanw' (tide).
Less common today
Dilyn isn't in the latest US Top 1000. It last peaked at #3,469 in 1999.
US births per 5-year period, 1990–present (SSA data).
