What does Lodovico Buonarroti expect from his son in the novel, The Agony and the Ecstasy?

Lodovico Buonarroti, Michelangelo’s father, is concerned over the family’s position, as their resources have dwindled over the centuries. His concern for Michelangelo seems to be two-pronged: that he not stain the family name, and that he provide money to support the family’s lifestyle.