J'ai demander aux traducteurs anglais une petite définition et ils m'ont dit :The term 'Pureblood' refers to a Gift at the origin of the genealogical tree. They are different from an 'Upstart' like Galdo who was a mix of different races, and are called differently even in the same species.
Je ne trouve toutefois pas de mots qui irai bien ='(It means he rose to power on his own in relatively short time, without having the heritage and power of being a pureblood member of a single species backing him.
Cdt