Great tide or son of the sea
Dylyn is a modern creative spelling of the Welsh name Dylan. In Welsh mythology, Dylan Ail Don was a sea deity, and the name's components 'dy' (great) and 'llanw' (tide) reflect this connection to the ocean.
Less common today
Dylyn isn't in the latest US Top 1000. It last peaked at #6,722 in 2000.
US births per 5-year period, 1990–present (SSA data).
