- Gave birth to a son McGreggor Edward Roberts (7 lbs, 4 oz.) on Tuesday, Sept. 21, 2010. McGreggor is the first child for the actress and husband Michael Roberts.
- Auditioned for a role on "One Life to Live" in the late 90's. The casting directors liked her but didn't hire her because of her resemblence to series star Erin Torpey (Jessica Buchanan). When Torpey left the show, Williamson was hired to replace her as Jessica Buchanan.
- Appears with Nathan Fillion in the Castle (2009) episode "Backstabber (2016)". They previously played siblings on One Life to Live (1968).
- Recently re-signed to stay on to "One Life To Live" for a undisclosed amount of time.(source:ABC soaps In Depth) (October 2007)
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