César Franck

César Franck was simultaneously a child prodigy and a late bloomer. His parents quickly discovered his enormous talent, but they were mostly interested in the money and fame that he might generate. Because of this, he was presented as a piano virtuoso, without a focus on composition. Unfortunately, his virtuoso career was less promising then they had hoped, and he started earning his money more as a teacher and organist. Composing stayed in the background, but in the mean time he did get some notable students, such as Henri Duparc. After a while, a sort of "Franck school" of students arose, albeit against his will, who affectionately called him ‘Pater seraphicus’. It was not until he was 50 before he started to receive some acclaim as a composer, and from his 52nd he started a very prolific period, lasting until his death at the age of 68.
Nowadays, Franck is mostly known for his instrumental music, peaking at the famous Violin Sonata in A. Besides this work,, his small collection of organ works was particularly influential.