Princess Marie des Neiges of Bourbon-Parma

In 2018, Marie des Neiges, Marie Thérèse, and Cécile Marie reconciled with their sister, Marie Françoise, ending their dispute over conflicting approaches on Carlism. The sisters spent a lot of time together after reconciling. As her sister, Cécile Marie, became ill, she helped care for her.

In 2016, Marie des Neiges visited the former ducal lands of Parma, and was received by the city of Fontanellato's mayor, Francesco Trivelloni She had previously visited Parma to attend the baptism of her grandnephew, Prince Charles Henry of Bourbon-Parma.

A Carlist, she supported the progressive reforms of her brother, Carlos Hugo, alongside her sisters Cécile Marie and Marie-Thérèse. She denounced the traditionalist agenda and Carlist claim made by her brother, Sixtus Henry. She attended Carlist gatherings around Spain to support political causes. Marie des Neiges was present at the Montejurra massacre on 9 May 1976.

Her father created her Countess of Castillo de la Mota. Throughout her youth, she was active in society and attending various balls, including the Paris Ball held at the French Embassy in Brussels. She was educated in the United States and in Quebec. In 1964, she attending the wedding of Princess Irene of the Netherlands and her brother, Prince Carlos Hugo, in Rome.

Princess Marie des Neiges Madeleine Françoise of Bourbon-Parma, Countess of Castillo de la Mota (Spanish: María de las Nieves de Borbón-Parma, French: Marie des Neiges de Bourbon-Parme; born 29 April 1937) is a French aristocrat, ornithologist, and Carlist activist. She is the youngest daughter of Prince Xavier, Duke of Parma and Madeleine de Bourbon-Busset. A progressive Carlist, she supported the liberal reforms to the party made by her elder brother, Prince Carlos Hugo, Duke of Parma, and rejected the conservative faction of the party created by her younger brother, Prince Sixtus Henry, Duke of Aranjuez. In her youth, she was a prominent socialite in Parisian society. Marie des Neiges has a doctorate in biology and worked as an ornithologist. She is a recipient of the Grand Cross of the Sacred Military Constantinian Order of Saint George and the Grand Cross of the Order of Prohibited Legitimacy.

Princess Marie des Neiges of Bourbon-Parma was born in Paris on 29 April 1937 to Prince Xavier, Duke of Parma and Piacenza and Madeleine de Bourbon-Busset. Her father was the titular Duke of Parma, the Carlist pretender to the Spanish throne, and the head of the House of Bourbon-Parma. Her mother was the daughter of Georges de Bourbon-Busset, Count de Lignières and a member of the non-dynastic Bourbon-Busset line of the House of Bourbon. She is a sister of Prince Carlos Hugo, Duke of Parma, Princess Marie Thérèse, Princess Cécile Marie, Princess Marie Françoise, and Prince Sixtus Henry, Duke of Aranjuez.