Hoch came from a family which had been in Frankfurt am Main for generations. All four of his grandparents had lived there. His father, the lawyer Johann Peter Hieronymus Hoch (1779–1831), was a magistrate and senator who, in 1829, became mayor of the
Free City of Frankfurt. His mother, the Swiss-born Ottilie von Sodenstern, was also the child of a magistrate and senator. He began to learn piano and violin at a young age. Like his father before him, Hoch studied law and received the degree of
Doctor of Law. At the age of 41 he married the Baroness Ottilie von Sodenstern, who would outlive him by 48 years. She died in
Kassel in 1922. The couple had no offspring. He inherited a large fortune from both sides of his family. He decided early on, with banker
Johann Friedrich Städel as his model, to bequeath enough money to his city to found an institute for education in the arts. Before he made a trip to in England in 1843, he made a first version of a will with this intention, which was completed on 14 July 1857. In his testament of 21 paragraphs, he left the Conservatory Foundation approximately one million
German gold marks. His grave can be found at the main city graveyard in Frankfurt. == Further reading ==