Felicia Browne was born at Thames Ditton on 18th February 1904. She studied at the St John's Wood School of Art and the Slade Art School. In 1928 she went to Berlin to study metalwork at Charlottenburg Technische Stadtschule, then became an apprentice to a stone mason from 1929-1931. While in Germany she took part in ant-fascist activities.
Browne won a scholarship to Goldsmiths College to study metal-work. She also found work teaching at the Central School of Arts and Crafts. She was also a member of the Artists International Association.
In 1931 Browne visited the Soviet Union. On her return she increased her anti-fascist activities. In 1933 she joined the Communist Party of Great Britain. The following year she won a prize for her design of a Trade Union Congress medal commemorating the centenary of the Tolpuddle Martyrs.
In 1936 Browne travelled to Spain with her friend, Edith Bone, a photographer. When the army revolted in July 1936, Browne joined the Republican militia in defence of the Popular Front government. Browne argued that "I am a member of the London Communists and can fight as well as any man." The fact that a British woman was fighting in the militia was reported in August in the Daily Express.
On 25th August 1936, Browne was killed in Aragón during an attempt to blow up a rebel munition train. according to Georges Brinkman: "... although under heavy fire, she was trying to help a wounded member of the group". Browne was the first British volunteer to be killed in the Spanish Civil War. As Angela Jackson pointed out in British Women and the Spanish Civil War (2002): "Her story has all the ingredients essential to heroic legend, the willing sacrifice of her life to save that of a comrade."
In her obituary in the Artists International Association journal it said: "She had most of the best human characteristics, but she conceived her own variety more as a source of opposition than of enjoyment. She was without guile, duplicity or vanity; painfully truthful and honest, immensely kind and generous, completely humane, loving any aspect of livingness, and as capable of enormous humour as she was deeply serious. She was gifted at every craft that she tried, a witty letter-writer, an amusing cartoonist, a vital and interesting companion, and socially much too gracious to belong credibly to the twentieth century."
Her friend and colleague Nan Youngman organized her memorial exhibition in October 1936.