In 1925 Johnson married, and his wife, Mary, soon began a blues career of her own, performing as Mary Johnson and pursuing a recording career from 1929 to 1936. (She is not to be confused with the later soul and gospel singer of the same name.) As with many other early blues artists, information on Mary Johnson is often contradictory and confusing. Various online sources give her name before marriage as Mary Smith and state that she began performing in her teens. However, the writer James Sallis gave her original name as Mary Williams and stated that her interest in writing and performing blues began when she started helping Lonnie write songs and developed from there. The two never recorded together. They had six children before their divorce in 1932.