 After Carl's death, the school was led by Frege's mother Auguste Wilhelmine Sophie Frege (née Bialloblotzky, 12 January 1815 – 14 October 1898); her mother was Auguste Amalia Maria Ballhorn, a descendant of Philipp Melanchthon and her father was Johann Heinrich Siegfried Bialloblotzky, a descendant of a Polish noble family who left Poland in the 17th century.In childhood, Frege encountered philosophies that would guide his future scientific career.For example, his father wrote a textbook on the German language for children aged 9–13, entitled "Hülfsbuch zum Unterrichte in der deutschen Sprache für Kinder von 9 bis 13 Jahren" (2nd ed., Wismar 1850; 3rd ed., Wismar and Ludwigslust