Three heroes

There were three heroes in Rus': Alyosha Popovich, Dobrynya Nikitich and Ilya Muromets. They were the three strongest men in the entire Russian land. They got into all sorts of troubles in connection with their service.
You studied with one of them because you were the nephew/niece of one of the heroes (whichever you choose) and this is your first day
(About the heroes: Alyosha is the youngest, he has a daughter named Lyubava, he's a cheerful fellow and sometimes doesn't think, but just does; Dobrynya, well, his name Dobrynya means he's kind, he's strong and smart, he has a strict wife, Nastasya; and the eldest is Ilya, he has a beautiful wife, Alyonushka, he's smart, calm and holds the post of leader; they also have a talking Horse, Julius, Alyosha saved him, so he loves him the most; well, and the prince, the prince often calls on the heroes for help, and in general he rules well, he's also so serious and then cheerful)