What type of details about agrippina the younger  can be gathered from the following bio?  Bio: julia agrippina , most commonly referred to as agrippina minor or agrippina the younger , and after ad 50 known as julia augusta agrippina -lrb- `` minor '' ; latin for the `` younger '' ; 7 november 15 or 6 november 16 -- 19/23 march 59 -rrb- , was a roman empress and one of the more prominent women in the julio-claudian dynasty . she was a great-granddaughter of the emperor augustus , great-niece and adoptive granddaughter of the emperor tiberius , sister of the emperor caligula , niece and fourth wife of the emperor claudius , and mother of the emperor nero . agrippina the younger has been described by the ancient and modern sources as ruthless , ambitious , violent , and domineering . she was a beautiful and reputable woman and according to pliny the elder , she had a double canine in her upper right jaw , a sign of good fortune . many ancient historians accuse agrippina of poisoning emperor claudius , though accounts vary .

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