Carl Czerny 1791-1857 studied with Beethoven
Born in Austria of Czech parents, studied w/Beethoven age 10-13, became his assistant, noticed deafness, memorized all of Beethoven's piano music. Known today for his Velocity studies/etudes.
Very interesting article section "Relationsip with Beeth." http://en.wikipedia.org/wiki/Carl_Czerny
Theodor Leschetizky 1860-1941 studied with Czerny
Polish born pianist, a founder of St. Petersburg Conservatory along with A. Rubenstein, taught in Vienna, contemporary of Liszt