Bellocq was born in 1920 in Saint-Hillaire-de-Talmont, a seaside commune in the Vendée department in the Pays de la Loire region in western France. She lived most of her life near the sea of this region.
Her mother taught her piano and singing, and organized painting lessons with nuns at the Couvent de Saint-Sornin. She developed a passion for painting and was taught to copy others' work through her painting instruction.
Around 1950, she began living on the banks of the river Rance in a classic Malouinière, or manor house. She reproduced idealized versions of the house and nearby pond in her paintings.
In the 1960s, she abandoned watercolours and guache to concentrate solely on using pastels, which she would dedicate herself to for more than 30 years.
She exhibited worldwide, including in Paris, France; Windsor, Henley-on-Thames, and Salisbury, England; Osaka, Japan; Chicago, Illinois; Sedona, Arizona; and Ede, Netherlands.
She died in the summer of 1999 and rests in Saint-Briac-sur-Mer, France.
