Clifford married Edna Ma DeFrate on 24 Dec 1906 in Seattle, Washington. They had three children: Ralph Edmond, Harry Eugene, and Russell Clifford. Edna died 15 Nov 1912 at Whitehall, Jefferson, Montana. He married Florence A. Curtis (1895-1973) on April 14, 1915.
Inscription: Front of stone: BROWN; Clifford Ulysses, May 23, 1885-July 18, 1964; Florence A. Curtis, Aug 14, 1895-May 8, 1973. Married Apr 14, 1915; solemnized Aug 21, 1924. Back of stone: Children - Ralph Edmond, Harry Eugene, Russell Clifford, Ella Josephine, Rosemary Clifford, Harriet Sanner, Florence Gladys, Jack Curtis, Lawrence Reed