|Name||Vada Marie Mercer Oswald|
|Children||Cathy Marie Oswald (daughter)|
Robert Lee Edward Oswald, Jr. (son)
|Relatives||Marguerite Oswald (mother-in-law)|
Lee Harvey Oswald (brother-in-law)
Marina Oswald (sister-in-law)
June Lee Oswald (niece)
Rachel Oswald (niece)
|Portrayed by||Amy Marie Wallace|
|First Appearance||The Rabbit Hole|
|Last Appearance||Happy Birthday, Lee Harvey Oswald|
Vada Marie Mercer was born in Keeter, Texas, where she was raised on a farm. She married Robert Oswald on November 21, 1956 in Fort Worth, Texas. They had two children, Cathy Marie Oswald and Robert Lee Edward Oswald, Jr. She was still living at the time of her husband's passing on November 27, 2017.
- Testimony of Robert Edward Lee Oswald, transcript from the Warren Commission, February 20, 1964. Retrieved on September 14, 2019.
- Uhler, Tom. "Robert Oswald, brother of Lee Harvey Oswald, dies at 83". Fort Worth Star-Telegram, obituary, December 1, 2017. Retrieved on September 14, 2019.