Who is Winston Niles Rumfoord from The Sirens of Titan and what is their importance?

A genial, wealthy aristocrat from Newport, Rhode Island. While flying his private spacecraft to Mars along with his dog, Kazak, Rumfoord passes through something called a "chrono-synclastic infandibulum" which scatters his existence across time and space. He materializes at different places in the solar system at different times at regular intervals. At the same time, he is constantly materialized on Titan, a moon of Saturn. He can read minds, and can see into both the future and the past.