Kelsey
[ˈkɛl.zi]Meaning
from an English surname, possibly "Cenel's island", from Old English Cenel "fierce" and eg "island"
Background Story
Kelsey comes from an English surname, which is derived from town names in Lincolnshire. Behind the Name gives the meaning as "Cenel's island", from the Old English name Cenel, "fierce", with eg, "island". Wiktionary derives the same element from Old English cēol, "ship", with ieġ.

Related Names
Keyzie
Kibbee
A surname
Billie
Diminutive of Bill; also a feminine form of William
Blitzie
Bobbie
Bootsy
Bosley
Recorded as a masculine given name in English
Chummy
A nickname, recorded as borne by several men
Dennie
A diminutive form of the name Dennis, which means 'follower of Dionysius'
Jackie
Diminutive form of Jack, meaning 'God is gracious'