What does Dyllan mean?
Dyllan \d(yl)-lan\ as a boys' name (also used as girls' name Dyllan). Dyllan's root is Welsh, and the name Dyllan means "son of the sea". Dyllan is a form of Dylan (Welsh). Mythology: a legendary Welsh hero.
Dyllan is an uncommonly occurring first name for men. Dyllan is an equivalently unusual last name too for all people. (2000 U.S. Census)
Charted below is the baby name popularity of Dyllan for boys. Dyllan entered the list in 1992 and reached its apex rank of #808 in the U.S. then, but is not in the list currently. (Top 1000 Birth Names Records, 2014)
Dillan, Dillon (#398 in 2014), Dylan (#29) and Dylon are the popular variation forms of Dyllan. These boy names reached the top of their popularity in 1992 (usage of 0.5792%) and have become significantly less popular since (usage 0.3146%, down 45.7%), with the forms Dillan and Dylon becoming less in vogue. Dillon (#398) and Dylan (#29) are two of the more trendy birth names in this compilation. Below is a charted comparison of the usage of the boy name Dyllan and corresponding names. (Top 1000 Birth Names Records, 2014)