Second Lady of the United States
Muriel Fay Buck Humphrey Brown (February 20, 1912 - September 20, 1998) was an American politician who served as the Second Lady of the United States and as a U.S. Senator from Minnesota. She was married to the 38th Vice President of the United States, Hubert Humphrey. Following her husband's death, she was appointed to his seat in the United States Senate, serving for most of the year 1978, thus becoming the first woman to serve as a Senator from Minnesota, and the only Second Lady of the United States to hold public office. After leaving office, she remarried and took the name Muriel Humphrey Brown.