When Mary Elizabeth Trulock was born on 12 May 1864, in Sutton Courtenay, Berkshire, England, her father, James S. Trulock, was 27 and her mother, Sarah Ann Treadwell, was 22. She married John McKenna on 3 February 1885, in Dora Township, Moultrie, Illinois, United States. They were the parents of at least 7 sons and 3 daughters. She lived in Tampico, Whiteside, Illinois, United States in 1900 and Chicago, Cook, Illinois, United States in 1910. She died on 8 September 1923, in Hume Township, Whiteside, Illinois, United States, at the age of 59, and was buried in Calvary Cemetery, Sterling Township, Whiteside, Illinois, United States.
English (Sussex, Wiltshire and Berkshire): variant of Truelock . This form of the surname is rare in Britain and Ireland.