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http://en.wikipedia.org/wiki/Nepotism

 

http://it.wikipedia.org/wiki/Nepotismo

[...] THE TERM COMES FROM ITALIAN WORD NEPOTISMO, WHICH IS BASED ON LATIN ROOT NEPOS MEANING NEPHEW. IN THE MIDDLE AGES SOME CATHOLIC POPES AND BISHOPS, WHO HAD TAKEN VOWS OF CHASTITY, AND THEREFORE USUALLY HAD NO LEGITIMATE OFFSPRING OF THEIR OWN, GAVE THEIR NEPHEWS SUCH POSITIONS OF PREFERENCE

AS WERE OFTEN ACCORDED BY FATHERS TO SON.