Aileen

Variant of EILEEN.

EILEEN   female   Irish, English
Anglicized form of EIBHLÍN. It is also sometimes considered an Irish form of HELEN. It first became popular in the English-speaking world outside of Ireland near the end of the 19th century.
EIBHLíN   female   Irish
Irish form of AVELINE.
AVELINE   female   English (Rare)
From the Norman French form of the Germanic name Avelina, a diminutive of AVILA. The Normans introduced this name to Britain. After the Middle Ages it became rare as an English name, though it persisted in America until the 19th century.
AVILA   female   Ancient Germanic
Derived from the Germanic element avi, of unknown meaning, possibly "desired". This name is also given in honour of the 16th-century mystic Saint Teresa of Ávila, Ávila being the name of the town in Spain where she was born.
HELEN   female   English, Swedish, Norwegian, Danish, Greek Mythology (Anglicized)
English form of the Greek ‘Ελενη (Helene), probably from Greek ‘ελενη (helene) "torch" or "corposant", or possibly related to σεληνη (selene) "moon". In Greek mythology Helen was the daughter of Zeus and Leda, whose kidnapping by Paris was the cause of the Trojan War. The name was also borne by the 4th-century Saint Helena, mother of the Roman emperor Constantine, who supposedly found the True Cross during a trip to Jerusalem.

The name was originally used among early Christians in honour of the saint, as opposed to the classical character. In England it was commonly spelled Ellen during the Middle Ages, and the spelling Helen was not regularly used until after the Renaissance. A famous bearer was Helen Keller (1880-1968), an American author and lecturer who was both blind and deaf.
FULL FORMS
ENGLISH: Avice, Avis
EQUIVALENTS
ANCIENT GERMANIC: Ava, Avelina, Aveza, Avila
DUTCH: Evelien, Eveline
ENGLISH: Aileen, Alene, Aline, Avaline, Aveline, Eileen, Evelina, Ilean, Ileen, Ilene
ESTONIAN: Evelin
FINNISH: Eveliina
FRENCH: Eveline, Évelyne
GERMAN: Ava, Evelin
HUNGARIAN: Evelin
IRISH: Aileen, Eibhlín, Eileen
ITALIAN: Evelina
POLISH: Ewelina
SCOTTISH: Aileen
SWEDISH: Evelina
DIMINUTIVES AND SHORT FORMS
ENGLISH: Lina
ITALIAN: Lina
OTHER FORMS
ENGLISH: Evaline, Evalyn, Eveleen, Eveline, Evelyn, Evie, Evvie
GERMAN: Evelyn