Mary Elizabeth Diggs was born on May 4, 1932 in Cleveland, Ohio to Julia Foster Nelson and Vernal Albert Diggs. She married John Tom Pearson but the couple divorced. She married George Oliver Stafford on November 15, 1963 in Henderson, Nevada. He passed away in 1980 and she married Phillip Theodore Hubel. Mary died on May 15, 2003 in Henderson, Nevada.

Roxton Whitmore was born February 13, 1889 in Overton. Nevada, then part of Lincoln County, to Eva and Brighman Whitmore. He grew up in the area and married his wife Adella Gentry in St. Thomas on July 3, 1910. Whitmore worked as a rancher and butcher and as a magnesite miner. He was an active member of the Church of Jesus Christ of Latter-day Saints and they had several children, all born in St. Thomas. He served as the last postmaster of St. Thomas before the city was flooded. He died in Overton on May 1, 1976 and was buried at the St. Thomas Cemetery.

Erick Robert Spiess was born May 29, 1919 to Lola and Erick Spiess in Kentucky. He later served in the military during World War II. He married Margaret Brown on August 10, 1944 in Lake Charles, Louisiana and the couple later moved to Las Vegas, Nevada. He died in Baltimore, Maryland on November 23, 2016.