Joanna Tibbett was formerly the vice-president and president of the New California Republic.
Joanna Tibbett was the vice-president for president Tandi. When Tandi died in 2248, Tibbett was then sworn into office as president. However, after just 5 years she was voted out of office (2253) after 38 NCR citizens were murdered by raiders in the Mojave Wasteland. She was replaced by Wendell Peterson.