The King Center said that Christine King Farris, the late Martin Luther King Jr.’s sister and a well-known activist herself, passed away on Thursday at the age of 95.

Having her family by her side, Farris passed away quietly in Atlanta, Georgia, according to the King Center, of which she was a founding board member.

Farris took part in important civil rights movement milestones like the 1965 Selma to Montgomery march and the 1966 “March Against Fear” in Mississippi.

In Memphis, Tennessee, ardent segregationist James Earl Ray killed Martin Luther King Jr. in 1968. The King Center for Nonviolent Social Change was established in Atlanta by Farris and Coretta Scott King, the late Martin Luther King’s widow.

Farris participated in a delegation to Washington, D.C., in 2011 for a ceremony marking the dedication of Martin Luther King Jr.’s monument on the National Mall. She also attended the 2017 unveiling of her brother’s long-awaited statue at the state Capitol.

On September 11, 1927, Willie Christine King was born in Atlanta. She graduated from Spelman College with a bachelor’s in economics in 1948 and afterwards enrolled at Columbia University in New York, where she obtained two master’s degrees in education.

She continued on to work as a Spelman educator and served as the center’s director until she retired in 2014.

Prior to his passing in 2017, she was married to Isaac Newton Farris Sr. for 57 years. Angela Farris Watkins and Isaac Newton Farris Jr. were the couple’s two offspring.

She authored a memoir about her early years and upbringing with her brother in 2003.