 Very early in <unk> 's rule , problems arose from competition for influence between <unk> and <unk> 's two main advisers , Seneca and <unk> . <unk> also attempted to influence the young <unk> . <unk> also is mentioned by ancient sources as " <unk> for her son ( <unk> ) " . This <unk> continued as is evidenced by the coin of the both of them . It is extremely unusual to see a women 's face on a coin in the ancient world . It is because of this position of power <unk> felt jealous as Seneca in particular rose up in <unk> 's court as he offered the advice <unk> wanted to hear unlike his mother . 
