Answer
Yes, Carl Czerny was a pupil of Beethoven, and he is one of the best-known students of the great composer. He studied with Beethoven from 1812 to 1815, and he was a very talented pianist and composer in his own right. Czerny's compositions were very popular in his day, and he was also a very successful teacher. He taught many famous musicians, including Franz Liszt and Robert Schumann.