Daughter of the former President of the British Board of Film Classification (BBFC) from 1965-1985, William David Ormsby-Gore 5th Baron Harlech (1918-1985). The name Colin is taken from her mother's maiden name Alice Ormsby-Gore was her older half-sister from her father's side. Tallulah Harlech is her niece, as she's the daughter of Colin's older half-brother Francis Ormsby-Gore, 6th Baron Harlech. Jasset Harlech is her nephew. She has 5 older half-siblings from her father's side: the Hons. Julian Osmby-Gore, Jane Ormsby-Gore, Victoria Ormsby-Gore, Alice Ormsby-Gore and Francis Ormsby-Gore, 6th Baron Harlech. Daughter of David Ormsby-Gore, 5th Baron Harlech and his second wife Pamela Colin.

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