Meaning name Dylan
Welsh name composed of the elements dy "great" and llanw "sea," hence "great sea." In mythology, this is the name of a sea god, son of Aranrhod, and twin brother to Lleu Llaw Gyffes.
Dylis - Variant spelling of Welsh Dilys, meaning "genuine, steadfast, true." Dyl - Short form of Welsh Dylan, meaning "great sea."