I never knew that my husband had a “hidden” aunt. This aunt died in 1916 – to my knowledge she was never mentioned. My mother-in-law often talked of losing her first born at the age of 5 or 6 days but never of her older sister who died at the age of 20.
She was born long before my husband was born in 1933. Eileen Elizabeth born 1896, died 1916. Through my genealogy research I discovered her. To be truthful, my daughter-in-law discovered her.