is a delusion of young children who believe their families are foster parents whilst their real family is of noble birth and distinguished lineage.

MIGNON DELUSION: "Those who suffer from the mignon delusion typically believe they have been placed in a foster family and that their real parents are royalty."
Cite this page: N., Pam M.S., "MIGNON DELUSION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/mignon-delusion/ (accessed October 18, 2021).