An important decision behind this was the so-called authorization letter signed by Charles XV July 4, 1868 and gave mademoiselle Modelon right to buy and own real estate in Sweden, even though they were Catholics.
Ett viktigt beslut bakom detta var det så kallade auktorisationsbrevet som undertecknades av Karl XV den 4 juli 1868 och gav mademoiselle Modelon rätten att köpa och äga fastighet i Sverige, trots de var katoliker.