I was a student of Richard Stanley
who was a student of Gian-Carlo Rota (see also here)
who was a student of Jacob Schwartz (see also here)
who was a student of Nelson Dunford
who was a student of Jacob Tamarkin (see also here)
who was a student of Andrei Markov (see also here
and here)
who was a student of Pafnuty Chebyshev
(see also here
and here)
who was a student of Nikolai Brashman (see also here)
who was a student of Joseph Von Littrow