Great tide or like a lion
Dillynn is a modern creative spelling of Dylan. It is derived from the Welsh elements 'dy' meaning great and 'llanw' meaning tide or flow, or alternatively linked to the word for lion.
Less common today
Dillynn isn't in the latest US Top 1000. It last peaked at #12,119 in 2012.
US births per 5-year period, 1990–present (SSA data).
