|Died||March 31, 1971 (aged 89)|
|Resting place||Bellu Cemetery, Bucharest|
|Alma mater||Academy of Fine Arts, Munich|
|Relatives||Preda and Udrea (sons)|
|Awards||Order of Cultural Merit, Knight rank|
Order of the Crown, Commander rank
Bunescu was born in Caracal, Romanați County, the son of Ioniță Bunea, a craftsman. He started his training in 1904–1906 with Dimitrie Hârlescu in Constanța, after which he went to study at the Academy of Fine Arts in Munich, where he worked with Hermann Groeber. He made his debut in 1911 at the Official Salon in Bucharest, and he had his first personal exhibit in 1919, at the Minerva Library. In 1924 he exhibited some of his paintings at the Romanian pavilion, during the Venice Biennale arts festival; he returned for exhibits at the Biennale in 1942 and 1954.
He began his long administrative career in 1920, becoming director of the Anastase Simu Museum, and later, after the death of the art collector in 1935, of the Simu Memorial House. In 1921, Bunescu participated in the establishment of the Fine Arts Union, being elected secretary, and from 1923 to 1927 he was president of the union. He received the National Prize for Painting in 1938, and in 1940 he was awarded the Order of Cultural Merit, Knight rank. In 1941 he was awarded the Order of the Crown, Commander rank. In 1944 he wrote a biographical study of Anastase Simu. Two years later, Bunescu was the chief force behind the initiative to open an art gallery at the high school in Caracal; the gallery now bears his name. After 1949, he took over the management of the Picture Gallery at the National Museum of Art.
He and his paintings appear on several stamps issued by Poșta Română: Venice paintings (1.55 and 6.40 lei, 1972), Construction Area painting (20 bani, 1973), Portrait (2.15 lei, 1981), Danube at the Cazan painting (2.80 lei, 2019).
- Simona Rotaru. "Marius Bunescu, olteanul care a organizat Muzeul Național de Artă". www.gazetanoua.ro (in Romanian). Retrieved April 24, 2021.
- "Decretul Regal nr. 3.100 din 7 noiembrie 1941 pentru conferiri de decorații", Monitorul Oficial (in Romanian), CIX (266, part I): 6.998, 8 November 1941
- Marius Bunescu (1944), Actele Fundației Anastase Simu (in Romanian), București: M. O. Imprimeria Națională, OCLC 895206997
- "Istoric". www.ionita-asan.ro (in Romanian). Ioniță Asan National College. Retrieved April 24, 2021.
- Jeana Pătru (2016). "Pinacoteca "Marius Bunescu" – Album" (in Romanian). Editura Koffman. p. 24. Retrieved April 24, 2021.
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