Source: Records of St. Martin and St. Severus Catholic Church in Muenstermaifeld. Source of the identification of Lucie Ackermann, the wife of Anton Hentgen, as the daughter of Nikolaus Ackermann and Barbara Wolff: Manfred Ruettgers.
Her baptismal sponsors were Johann Dietzeler and Lucie Ackermann.

Source: Records of St. Martin and St. Severus Catholic Church in Muenstermaifeld. Source of the date and place of his birth: Manfred Ruettgers.
Hentgen was also spelled Henngen.