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Daughter of Willem Hendrik Janssen and Anna Maria Knarren Sister of Petronella Elizabeth Janssen; Petronella Elisabeth Janssen; Theodorus Bernardus Renier Janssen; Louisa Antonia Janssen; Johanna Paulina Carolina Janssen and 5 others; Cornelia Pelagia Janssen; Maria Anna Petronella Amelberga Janssen, tweeling; Hendrik Hubert Herman Janssen; Jan Mathijs Hubert Janssen and Julianus Hubertus Gregorius Janssen « less