Marie-Thérèse Marrel was born on 26 August 1930 at Oran, Algeria, during a two-years trip of her parents in North Africa. At the age of eight months, she was brought to France where she grew up between Nice, Paris and Burgundy. Due to a marked inclination for the arts, known since his early age, Marrel enrolled at Villa Thiole School of Fine Arts, Nice, France (1947-1950). She continued her studies at the École de Amédée Ozenfant first in New York (1950-1952) and then in Cannes (1952-1954). She furthered her studies at the Radcliffe Institute of Advanced Study of Harvard University (1954-1958). During the time she spent in Massachusetts, Marrel worked for the Elizabeth Peabody House.
Marie-Thérèse Marrel has presented the following personal exhibitions : Martha Jackson Gallery, New York (1959); Galerie Rive Gauche, Paris (1987); Irene Malher Fine Arts, Seattle, USA (1989); Institute Français, Thessaloniki (1992, 1994); Artist's Studio, Thessaloniki (1995, 1996); The External and Internal Faces of Man, Exostis Art Gallery, Thessaloniki ( 1996); Exostis Gallery, Thessaloniki (1998); Galerie En Sous Sol, Toulouse (2002); La Maison des comtes de Toulouse, Toulouse (2004); and Portrait d'Augustus Saint-Gaudens, Musée d'Aspet, France (2007); and Archipel, Toulouse (2008). She has also taken part in the following group exhibitions: Villa Thiole, Nice (1954); Galerie Saint André des Arts, Paris (1963); Galerie Philippe Tallien, Saint Tropez (1971); Musée de l'Annoniade, Saint Tropez (1974); Les Femmes Peintres, La Ville de Saint Tropez (1975); Galerie des Deux Rues, Saint Tropez (1976); Municipal Gallery, Thessaloniki (1991); Greenpeace: Art for the Environment, Mylos, Thessaloniki (1995); Dimitria: Exhibition of the Visual Art Practitioners of Northern Greece - SKETVE, Gallery of the Society of Macedonian Studies, Thessaloniki (1995, 1997); Terracotta Gallery, Thessaloniki (1997); Exostis Gallery, Thessaloniki (1997); Le Liens (The Link), Fleurance, Gers, France (1999); Empreinte D'Art (The Imprint of Art), Gagnages, France (1999); Couleurs d'Été (Colors of Autumn), Flamarens, France (1999); Le Passage, Centre Cuzin, Auch, France (1999); Les Peintres Méridionaux, Le Bazacle, Toulouse (2003); Ateliers de Blandine Journet, France (2005); La Tuilerie de Denis Pinel, France (2006); Castelo di Galeazzo (2007); and L'Archipel, Toulouse (2008). It is also worth noting that in 2007 the Saint-Gaudens National Historic Site in Cornish, New Hampshire, commissioned Marrel to create the portrait of celebrated sculptor Augustus Saint-Gaudens (1848-1907) to mark the centenary from his birth.
Marie-Thérèse Marrel currently lives and works in Toulouse and visits Greece unfailinngly every summer.