Martin Luther King Jr. was assassinated on April 4, 1968, while standing on the balcony of the Lorraine Motel in Memphis. King was in Memphis to lead a march in support of the local sanitation workers' union. He was pronounced dead one hour later. Mrs. King, a source of strength following her son's assassination, faced fresh tragedy the next year when her younger son and last-born child, Alfred Daniel Williams King, who had become the assistant pastor at the Ebenezer Baptist Church, drowned in his pool.