Wrong "The original death knights were created for Orgrim Doomhammer by Gul'dan as powerful soldiers of the Horde. These death knights were created by placing the souls of the slain warlocks of the Shadow Council into the corpses of fallen Stormwind knights, the first of whom was Teron Gorefiend. Unlike modern death knights of the Scourge, these ghoulish fiends were not battle hardened warriors"
"Most of these death knights were destroyed during and after the Second War, either killed by the Alliance or transformed into liches by Kil'jaeden."
Years after the destruction of Draenor, the immensely powerful Lich King created a new breed of death knights: malevolent, rune-wielding warriors of the Scourge.
Unlike Gul'dan's death knights, these dark champions possess unholy strength; however, they do not possess free will and their minds are inexorably entwined with and dominated by the Lich King's vast consciousness.
The Knights of the Ebon Blade is a faction consisting of the renegade death knights that broke free of the Lich King's control after the battle of Light's Hope Chapel (in other words, player-created death knights).
In game dKs and paladins have nothing in common