Margaret I of Denmark
She was the daughter of Gerhard VI, Count of Holstein-Rendsburg (d. 1404) and Catherine Elisabeth of Brunswick-Lüneburg. In 1408, she was placed in the convent by Queen Margaret I of Denmark by special consent of the Pope. She became a full member of the order in 1415. Due to her age, it is believed that she initially resided in her own house on the convent premises.