J.J. Thomson won the Nobel Prize in physics in 1906 showing that the electron is a particle. Ironically, his son, G.P. Thomson, won the Nobel Prize in physics in 1937 showing that it is not (or rather that the electron can also behave as a wave).
https://www.reddit.com/r/Damnthatsinteresting/comments/1v482tj/jj_thomson_won_the_nobel_prize_in_physics_in_1906/