Quarks.

The name "quark" was from the "Finnegan's Wake" by James Joyce. It was suggested about its existence by Murray Gell Mann and he did get the Nobel Prize for it. Quarks come in different flavours and colours.
While there are six flavours they occur only groups as 2, 3 or 5. Mesons comprise of 2 quarks while Protons and nuetrons(baryons) comprise of 3 and then there is a pentaquark. The flavours are Up, Down, Charm, Strange and ofcourse top and bottom. Most of the evidence about them are implied as they do not occur as quarks.

There importance lies in the fact that all the hadrons can be explained with this six quarks. That is quarks and leptons are supposed to be the building blocks of the matter.