While studying in Berlin, I interacted with Weierstrass, Dirichlet, Jacobi, and Steiner...eventually taking a doctorate in 1845 in algebraic number theory.

In the "universal arithmetization of analysis," I held fast to the position that airthmetic and analysis had to be based on whole numbers.

An advocate of "finitism," I strongly rejected the growing use of real number constructions and the idea of multiple infinities.

Primarily a prosperous businessman, I maintained strong relationships with the Berlin mathematics professors...and occasionally embarrassed them with my narrow views.

I am the one who is blamed for Cantor's lack of professional recognition, and historians portray me as the cause of Cantor's bouts of insanity.

Answer: Leopold Kronecker, 1823-1891