Keyden is a modern American spelling in the large Caden and Kayden family. Caden is usually traced to the Irish surname Mac Cadáin, "son of Cadán", a personal name that may come from cath, "battle", though the first name owes its popularity to its sound rather than its history. Keyden moved between number 2400 and number 3300 from 2015 to 2024 and jumped to number 1818 in 2025, its highest rank so far.