Left and center: Chisholm, circa 1993; Right: Age-progression by NCMEC to 17.

Sigourney Teresa Chisholm
Missing since May 13, 1993 from Toronto, Ontario, Canada.
Classification: Family Abduction

Vital Statistics

• Date Of Birth: September 20, 1991
• Age at Time of Disappearance: 1 year old
• Height and Weight at Time of Disappearance: 2'6; 22 lbs.
• Distinguishing Characteristics: Brown hair; brown eyes.
• Dentals: Good teeth.
• AKA: Sigi

Circumstances of Disappearance
Sigourney may be in the company of her mother, Patricia Joan O' Byrne (pictured below), who also goes by the name of "Trish". O’Byrne left a message stating that she was leaving the country with her daughter. The abductor was born October 16, 1957, is 6'1" tall and weighs 217 lbs. She wears glasses or contact lenses, has a faint scar on her upper lip and may dye her hair red from it's natural color of brown. She also has brown eyes.


Patricia Joan O'Byrne

Investigators
If you have any information concerning this case, please contact:

Royal Canadian Mounted Police (toll-free)
877-318-3576

NCMEC #: RCMP9300197

NCIC Number: M-173795988
Please refer to this number when contacting any agency with information regarding this case.

Source Information:
Interpol
Our Missing Children
National Center for Missing and Exploited Children