Concepción “Conchita” Martín Picciotto, the Spanish-born woman who camped outside the White House for 35 years, in what may have been one of the longest protest vigils in US history, died on Monday in a homeless shelter in Washington DC.

She was believed to be in her 80s, but her exact age was not known.

Conchita would only move her camp at brief times during the presidential inaugurations

Also known as Connie, Conchita began making headlines after she set up her tent on August 1, 1981 near the White House, placing placards and other signs against nuclear proliferation. She became popular with the tourists who came to visit 1600 Pennsylvania Avenue.

She would only move her camp for brief periods during presidential inaugurations.

After she divorced her Italian husband, a Manhattan court ruling saw her lose custody of her daughter. It was this court ruling that pushed her to begin her long protest vigil, which the Washington Post considers to have been the longest in US history.

“I wanted to go to Spain to raise my young daughter, but my husband and his family were against this and began a harassment campaign that ended in me losing custody of the girl,” she told EL PAÍS in a 1991 interview, which marked the 10th anniversary of her White House vigil.

Her inability to convince the court to change its mind led her to protest other causes. Conchita joined Thomas Doubting, an activist in his campaign against nuclear proliferation.

Conchita defended the cause until her final days.

When a man jumped the White House fence in 2014 and entered the building through the main entrance, the Department of Homeland Security was considering dismantling Conchita’s campsite, but eventually decided against it.

The Spanish woman lived off donations and sales of the “peace rocks” she painted herself.

She died at the N Street Village, a shelter for homeless women.