Welter was born in Mexico City, the daughter of Dutchengineer 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.[5]
Welter had three siblings, a sister, Blanca Rosa Welter (later known as Linda Christian, 1923–2011), and two brothers, Gerardus Jacob Welter (b. 1924) and Edward Albert Welter (b. 1932).[6][7] She was wife of the notable Mexican film productor Gustavo Alatriste. Via Linda Christian, her sister, Welter was sister-in-law of actor Tyrone Power and aunt of actors Taryn Power and Romina Power.
In 1955, Ariadne starred in the classic Luis Buñuel film The Criminal Life of Archibaldo de la Cruz. In 1956, she starred along with German Robles in the classic Mexican horror film El Vampiro. During the 1960s, Ariadne was one of the principal Mexican stars of the horror and fiction films. She continued to appear in movies and on telenovelas in Mexico in her later years.
^Ancestry.com. New Orleans Passenger Lists, 1820-1945 [database on-line]. Provo, UT, USA: The Generations Network, Inc., 2006. Port of Departure: Tampico, Mexico. Ship Name: Maasdam Port of Arrival: New Orleans, Louisiana. Date of Arrival: Mar 23, 1925.
^Paul Parla & Charles P. Mitchell Screen sirens scream!, McFarland, 2000, pp.35–36
^Paul Parla & Charles P. Mitchell Screen sirens scream!, McFarland, 2000, p.35
^Paul Parla & Charles P. Mitchell Screen sirens scream!, McFarland, 2000, p.35
^Ancestry.com. New Orleans Passenger Lists, 1820-1945 [database on-line]. Provo, UT, USA: The Generations Network, Inc., 2006. Micropublication T905. RG085. Rolls #104. Port of Departure: Tampico, Mexico. Ship Name: Maasdam Port of Arrival: New Orleans, Louisiana. Date of Arrival: Mar 23, 1925.
^Ancestry.com. New York Passenger Lists, 1820-1957 [database on-line]. Provo, UT, USA: The Generations Network, Inc., 2006. Year: 1941; Microfilm serial: T715; Microfilm roll: T715_6565; Line: 9;. Port of Departure: Cape Town, South Africa. Ship Name: President Monroe. Port of Arrival: New York, NY.