The name Aislinn is derived from the Irish Gaelic word "aisling" which means "dream" or "vision." It has its roots in ancient Celtic mythology and folklore, where dreams and visions were highly revered and held great spiritual significance.

Historically, the name Aislinn gained popularity in Ireland during the late 20th century as a revival of traditional Irish names. It is believed to have been first used as a given name in the late 1960s or early 1970s, although there are no definitive records of its earliest usage.

One of the earliest recorded references to the name Aislinn can be found in the poem "Aisling Ghéar" (Sharp Vision) by the 18th century Irish poet Aodhagán Ó Rathaille. The poem describes a vision of Ireland and its struggles for freedom, personified as a beautiful woman named Aisling.

Notable individuals named Aislinn throughout history include Aislinn Hunter, a Canadian novelist and poet born in 1959. Her works include "Stay" and "The Archivist." Aislinn Derbez, born in 1986, is a Mexican actress and model known for her roles in telenovelas and films.

Aislinn Muir, born in 1973, is an American figure skater who competed in the 1992 and 1994 Winter Olympics. Aislinn Paul, born in 1994, is a Canadian actress best known for her role as Clare Edwards in the television series "Degrassi: The Next Generation."

Aislinn Derbez, born in 1986, is a Mexican actress and model who has appeared in various telenovelas and films. She is the daughter of famous Mexican comedian Eugenio Derbez.