In 1886 Jacques van Marken was in France at a spa, Agneta Matthes found a letter in his mail from a Mary Eringaard who requested the due child support for their children.
In 1886 Jacques van Marken was in France for a cure as his life would be childless. When Agneta Matthes went through his business and private mail, she found a letter from a Mary Eringaard who warned them that they were due child support for their children.