She appeared in the Luis Buñuel film The Criminal Life of Archibaldo de la Cruz (1955).

Welter was born in Mexico City, the daughter of Dutch engineer and Royal Dutch Shell executive Gerardus Jacob Welter[2] and his Mexican-born wife of Spanish, German and French descent Blanca Rosa Vorhauer.

[3] Her family moved a great deal during Ariadne's youth, living everywhere from South America and Europe, to the Middle East and Africa.

[4] As a result of this nomadic lifestyle, Welter became an accomplished polyglot with the ability to speak fluent French, German, Dutch, Spanish, English, Italian, and even a bit of haphazard Arabic and Russian.

In 1955, Ariadne starred in the classic Luis Buñuel film The Criminal Life of Archibaldo de la Cruz.