What are the differences in the two main characters in I have lived a thousand years

who is the main character other than Elli?

Explanation:

their are 4 main characters

honestly you should get that checked out because it really isn't normal

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.