Born on 11 April 1944, in Turda, Cluj county, Romania.
Graduated the Arts Highschool (1963) and Ion Andreescu Arts Institute – Sculpture Department (1969), Cluj Napoca.
Since 1971 Maniu has participated in regional, national and international exhibitions organized by the Romanian Ministry of Culture.
In 1983 he moved to Köln – Germany, an in 1993 he settled in Paris, France.
Numerous personal and group exhibitions in Germany, Switzerland, Austria, The Netherlands, France.
Since 1986 Maniu has regularly participated in the traditional Salons in Paris.
Various galleries have presented Maniu at International Art Fairs in Basel, Geneva, Rome, Barcelona, Brussels, Hamburg, New York, Miami.
Since 1996 his work has been on permanent display at the Opera Gallery in Paris, London, Venice, Monte Carlo, Geneva, New York, Miami, Singapore, Honk Kong, Seoul and Dubai.
Represented Romania as a Guest of Honour at International Fine Arts Salons organized by French local government.
The First Prize and Gold Medal of the National Federation of French Culture (1987) ;
The Great Award of the European «Art and Trade» Biennial under the high patronage of the French Ministry of Culture (1996) ;
the Gold Medal awarded by the «French Merrit and Devotion» High Commission for Reward (Commission superieure des recompenses) (2000);
the «Cultural Merit» Order in the rank of officer, awarded by the Romanian Presidency (2004) ;
«Senior of the City» distinction awarded by the Mayor of Cluj Napoca (2009) ;
Title “Honorary Ambassador of Romanian culture in Germany” awarded by the Businessmen Club of the german language from Northern Transylvania – DWNT (2015).
His paitings are part of numerous important private art collections all over the world.
Works in museums and public collections : the National Art Museum in Cluj-Napoca, the Contemporary Art Museum in Galati, Albrecht Durer Museum in Nürnberg – Germany,
the International Museum of Fantastic Art in Château Gruyeres – Switzerland, Volkswagen Society in Wolfsburg – Germany, Manheimer Insurance Company – Germany,
Transilvania Bank – Cluj-Napoca, the International Arhitecture Consortium in Alabama – USA, Missoni Society, Milano – Italy, Frank Müller Society – Switzerland.