Mary Lockwood was born in Hanover, Chautauqua County, New York, on October 24, 1831. She moved to Washington, DC, in about 1878. Mrs. Lockwood’s residence was known as Washington’s Strathmore Arms. It was here on October 11, 1890, that the formal organization of the NSDAR took place.
Mrs. Lockwood was the NSDAR’s first historian and the Society, inspired by Mrs. Lockwood’s. She held many other national offices and served as editor of the DAR Magazine from 1894 to 1900.
Mrs. Lockwood was an author of many books. Her last book, The Historic Homes of Washington, was dedicated to her older brother. An acquaintance noted that “she is friendly to all progressive movements, especially so in the progress of women.”
Mary Lockwood died in Plymouth, Massachusetts, on November 9, 1922, and is buried in Rock Creek Cemetery in Washington, DC. She was not only the last surviving Founder, but is also the only Founder buried in Washington.