Princess María Teresa of Bourbon-Parma

Princess Maria Teresa of Bourbon-Parma (28 July 1933 – 26 March 2020) was a member of a cadet branch of the Spanish royal family. She was a socialism activist. She earned the nickname "Red Princess", and a monarchist who supported the Carlist movement. 
In the 1960s and 1970s, Maria Teresa supported her brother, Carlos Hugo, in his fight to make the Spanish Carlist party more liberal. She was supportive of André Malraux, François Mitterrand, Yasser Arafat and Hugo Chávez.
Maria Teresa died in Paris on 26 March 2020 of COVID-19, aged 86. She is the first royal to have died from the pandemic. Her funeral took place on 27 August 2021 at Basilica di Santa Maria della Steccata in Parma.