Lyda Southard (October 16, 1892-February 5, 1958) was an American serial killer. She was suspected of killing her brother-in-law, four husbands and a daughter, but was only convicted of killing her fourth husband, Edward Meyer. Lyda Anna Mae Trueblood was born October 16, 1892 in Keytesville, Missouri. The Trueblood family moved to Twin Falls, Idaho, in 1906. Lyda married Robert Dooley on March 17, 1912. The couple settled with his brother Ed Dooley on a ranch in Twin Falls and had a daughter, Lorraine, in 1914. Ed Dooley died in August 1915; the cause of death was ruled ptomaine poisoning. Robert Dooley subsequently fell ill and died of typhoid fever on October 12, 1915. She married William G. McHaffle in June 1917. Shortly afterward, Lyda's three year old daughter fell ill and died, prompting the McHaffles to move to Montana. A year later, McHaffle suddenly fell ill of what was thought to be the flu and died in Montana on October 1, 1918.
Contributions by Marasmusine, Sarahhuff, and Dimadick.