Likely a variant of Dylan, meaning son of the sea.
Dylam is most commonly encountered as a rare spelling variant of the Welsh name Dylan. In Welsh mythology, Dylan was a sea god, leading to the traditional interpretation of the name as son of the sea or born of the ocean.
Less common today
Dylam isn't in the latest US Top 1000. It last peaked at #5,223 in 2024.
US births per 5-year period, 1990–present (SSA data).
