Von Mandl's wife, Debra Gibson von Mandl, is a licensed acupuncturist.

Debra, a doctor of traditional Chinese medicine, has practiced acupuncture in Vancouver since 1996, according to her website. She uses Nambudripad's Allergy Elimination Technique to treat patients with severe allergies with a 90% success rate, she told The Globe and Mail in 2002.

The couple has a son named Anthony Sebastian, according to von Mandl's biography on his former primary school's website.