Son of the sea or great flood
Dillion is a variant of the Welsh name Dylan. In Welsh mythology, Dylan was a sea god or hero associated with the ocean, often translated as 'son of the sea'. While the 'Dillion' spelling is much rarer than the standard 'Dylan', it retains the same maritime etymology.
Less common today
Dillion isn't in the latest US Top 1000. It last peaked at #540 in 1992.
US births per 5-year period, 1990βpresent (SSA data).
American actress